SELECT Colorado
MARCH 21, 2026
SATURDAY 1 pm mT
Fort Collins, Colorado Centennial Livestock Auction
Welcome to the sale
Welcome to the Colorado Select - Triangle J Ranch – Altenburg Super Baldy Ranch – 34th Annual Bull Sale! In 2022 we made the decision to sell our cowherd in its entirety to Triangle J Ranch, Miller, Nebraska, Annette and Darby Line family. Triangle J was the #1 registration herd in Nebraska in 2021. Altenburg was the #1 registration herd in Colorado in 2021. These bulls are a blend of breeding of both cowherds. We want to offer you the best of both! And how similar they are, the philosophies of good Simmental and SimAngus, black, baldies, and red. No matter the origin of the cows, we think you will find bulls you will like!
All the bulls have been PAPed – Simmental and SimAngus work well at altitude. On February 13th, 2026, Dr. Tim Holt of Colorado State University tested our bulls at the ranch at 5,315 feet elevation. Our attempt is to show you which bulls are better risks to take to the “high country” and perform well. Those scores will be provided on each bull. Dr. Holt predicts spring yearling born bulls with scores of 42 or less and two year old bulls of 45 or less will work well at high altitude. This year, 15 two year old bulls were taken to Walden and PAP tested, furthering our commitment to bring you more PAP tested bulls. Simmental and SimAngus can help solve your PAP - Brisket problems!
We are selling at Centennial Livestock Auction in Fort Collins!! Centennial Livestock Auction is a great facilities, and the Kruse family and their crew provide excellent service. We will be selling on DVAuction.com. Please register ahead of time to assure proper bidding on sale day.
The sale starts promptly at 1:00 P.M., so come early so you can view the bulls and join us at 11:30 AM for our complimentary lunch. But come early, eat lunch and talk bulls!
We look forward to seeing you at the sale, Saturday, March 21, 2026. Please call if you have any questions regarding the sale offering or leave a bid on a bull.
Remember, this is not just another sale . . . this is a crossbreeding program.
Sincerely, Willie Altenburg 970-481-2570
Welcome to the Colorado Select Bull Sale!
This sale will be a great opportunity to buy from our very best. The only sire group that was split for both Nebraska and Colorado would be the Bold Ruler Sire group. All other progeny groups will be sold in their entirety in Colorado.
After purchasing the Willie Altenburg herd, we promised to continue to find new ways to push the genetic advancement of this sale to new heights. We are dedicated to the most accurate measurements, DNA advancements, and most importantly, we will do everything we can to give you the latest and most accurate information we can for maximum profitability of your herd.
New this year is something we called the “Walden Experience.” As a test project we took a small group of age advantage bulls to a higher altitude of 8,100 ft to be PAP tested. The bulls were given the recommended time to acclimate and then PAP tested. The experience went so well that we plan to grow this program and offer more age advantage bulls like the ones highlighted in this year’s catalog. As we continue to learn how advantageous DNA and PAP is to the entire cattle industry, we ask that you grow your genetics with us and our dedication to your herd’s health and financial success.
Please join us March 21st in Fort Collins at Centennial Livestock or stop by the development facility any time for a tour. We appreciate your past business and look forward to meeting new faces.
Sincerely,
Darby Line Dillan Line
308-627-5085
308-293-9241
The Darby Line Family
Willie and Sharon Altenburg
SALE LOCATION
SELECT Colorado
Centennial Livestock Auction, 113 NW Frontage Rd., Fort Collins, CO 80524
SALE DAY PHONES
Willie Altenburg 970-481-2570
Darby Line 308-627-5085
Dillan Line 308-293-9241
Jeremy Cast 308-293-2003
Susan Russell 719-469-0020
John Clatworthy 970-768-7500
Justin Warren 970-367-0035
Ryan Large 308-340-9859
Marty Ropp 406-581-7835
Corey Wilkins 256-590-2487
Jared Murnin 406-321-1542
Joe Spanel 970-631-6921
AUCTIONEERS
Shawn Siverberg 970-219-3561
Dusty Kruse 970-908-9432
INSPECTION OF THE SALE CATTLE
The cattle are at the Colorado ranch. We welcome you to come view the cattle and visit with us prior to the sale. Contact Willie Altenburg 970-481-2570.
SALE CONSULTANTS
Marty Ropp 406-581-7835
Corey Wilkins 256-590-2487
Jared Murnin 406-321-1542
SALE ACCOMMODATIONS
Quality Inn 970-568-0444
7860 6th Street, Wellington
Best Western 1638 East Mulberry St., Fort Collins - next to Charco Broiler
STORM DATE
Monday, March 23, 2026
Centennial Auction, Fort Collins, CO
ONLINE BIDDING
Bid live online at www.dvauction.com. See page 24 for more information.
MARCH 21, 2026
SATURDAY 1 pm mT
Fort Collins, Colorado
Centennial Livestock Auction
SUPPLEMENT INFORMATION AND SALE ORDER
Sale order and supplement will be available on sale day. Sale order and supplement will also be posted online and on FaceBook prior to the sale.
TERMS AND CONDITIONS
Terms of the sale are cash. Every animal will be sold to the highest bidder. Announced changes on sale day take precedence over printed material in this sale book.
All cattle are the buyer’s property as soon as sold and will be cared for a reasonable length of time at the buyer’s risk. Any person attending the sale does so at their own risk. Neither the sale management, owners, not any person connected with this sale, assumes any liability, legal or otherwise. All animals listed in the sale book as homozygous black or homozygous polled are done so to the best of our knowledge. We are not liable for any inaccuracies. Announcements made on sale day will take precedence over any printed material.
LIABILITY
The Altenburg family, Line family, sale staff and/or Centennial Livestock Auction are not responsible for sale day accidents.
LUNCH
Complimentary lunch available at the sale facility at 11:30 am.
ALTENBURG SUPER BALDY
Willie and Sharon Altenburg 570 E. County Rd. 64, Fort Collins, CO 80524
Cell: 970-481-2570 willie@rmi.net www.altenburgsuperbaldy.com
TRIANGLE J RANCH
Darby and Annette Line 35355 Arrow Rd., Miller, NE 68858
Phone: 308-457-2505
Cell: 308-627-5085 www.trianglejranch.com
About the Bulls
PAP TESTING
Bulls were PAP tested by Dr. Tim Holt, CSU, on February 13, 2026, at 5,319 feet elevation. PAP scores are provided to indicate differences between bulls and how they may work at higher elevations. Dr. Holt indicates yearling bulls with scores of 42 or below should work at higher elevations. Fall born bulls with scores of 45 or below should work at higher elevations. There is also a group of age-advantaged bulls that were PAP tested in Walden, CO at 8,100 feet. They are denoted in the book.
REGISTRATION AND TRANSFER
Registration certificates will be transfered to buyers upon request at the seller’s expense with 45 days of the sale. When making settlement, buyers must give complete written name and address information for making transfers.
ABSENTEE BIDS
Anyone wishing to bid who cannot attend the sale may place phone or mail bids by contacting any of the Line family, Altenburg family or sale staff.
HEALTH
All cattle have health papers and are ready for interstate shipment. Bulls were semen tested by Dr Sina Parsaye, Fort Collins, and are guaranteed breeders. Scrotal circumference and semen test results will be available on sale day. Some bulls (due to their age) may require additional time and be retested in 30 days. Those bulls will be designated on sale day. We will keep those bulls and retest them and guarantee as breeders. All bulls are free of known genetic defects.
SEMEN INTEREST
Retaining 1/2 semen interest on bulls selling for less than $20,000. Retaining 1/3 semen interest for bulls that sale for more than $20,000.
DELIVERY OPTIONS
At the buyer’s option and risk, we will feed the bulls until April 15, 2026 at no expense to the buyer. Or take your bull home the day of the sale and we will deduct $75 from the selling price.
LIVESTOCK INSURANCE
James Secondino 812-208-0956
American Livestock Insurance, a division of Market Service Incorporated
CALVING EASE RATINGS
Ratings are based on birth weight, birth weight ratios, Calving Ease EPD and Birth Weight EPD.
** A bull who should be used on cows with minimal assists expected
*** A bull who can be used on heifers with minimal assists expected
**** A bull who is an excellent candidate to be used on heifers with minimal assists expected due to the combination of bulls calving ease, birth weight, ratio and EPDs
1 667N
667N Sells as Lot 1. TJ 95A Maternal granddam of Lot 1.
892N
892N Sells as Lot 2.
3 798N
4 1877N
Bold Ruler is our favorite proven herd sire that excels in every category. His progeny has been sale toppers across the country. The bulls supply incredible genetic value and provide wonderful phenotype. Keep the Daughters from the Bold Ruler bulls. The wet daughters are some of our favorite cows.
5
1029N
Homozygous
798N Sells as Lot 3.
KBHR BOLD RULER H152 Sire of Lots 1-16.
BOLD RULER SONS
1083N
7
1565N
8 530N
9 936N
10
934N
11 800N
12 911N
1003N
14 661N
15 820N
16
769N
We are bringing our best set of 50K sons to date to Colorado. The bulls are massive sound structured herd bull prospects with tremendous eye appeal. When asked which is the best proven purebred bull to keep replacement heifers, we always tell our customers to look at 50K. The cows are flat out awesome.
TJ 50K 485H Sire of Lots 17-27.
1084N Sells as Lot 17.
691N Sells as Lot 18.
691N
692N Sells as Lot 19.
807N
19 692N
21 586N
941N
23 588N
572N
587N
27 757N
Gold Strike is probably one of the most consistent sires ever raised at Triangle J to add performance and quality to your cow herd. You won’t find a more impressive bull phenotypically. He is massive from every angle with excellent feet and legs. Use his sons to improve female quality and add pounds to your calf crop.
TJ 43Z Maternal granddam of Lot 28.
612N Sells as Lot 28.
28 612N Homozygous Black Homozygous Polled
TJ GOLD STRIKE 506J Sire of Lots 28-37.
613N Sells as Lot 29.
29 613N
30 544N
765N
34 883N Homozygous
979N
884N
37 836N
979N Sells as Lot 35.
884N Sells as Lot 36.
Dr Sina Parsaye - Semen evaluation day
Frosty has been our “go to” Baldy Maker that adds power and performance like no other bull we have used. Progeny are big footed, sound structured, and easy fleshing to hold their weight in tough environments. Proven PAP data shows that the bulls will be above average for PAP at high altitude, so all the Frosty bulls are in Colorado for your evaluation.
790N Sells as Lot 38.
TJ FROSTY 318E Sire of Lots 38-49.
808N
808N Sells as Lot 39.
1000N
894N
42 898N
43 812N
44 942N
45 975N
779N
47 989N
48 751N
49 940N
Sells as Lot 50.
50 1101N
CDI ABUNDANCE 391C
CDI/NF HONOR GUARD 267H ASR MS SNAKE EYES G9243
CDI MISS VERDICT 141C ASR
1101N
Dr. Tim Holt, Colorado State University, PAP testing the bulls
CDI/NF HONOR GUARD 267H Sire of Lots
51 600N
The Honor Guard calves in this sale offer balanced trait selection with a proven EPD package. They are consistently some of the most physically impressive bulls in the sale. They are attractive, heavy muscled, straight-lined, and good structured. He is one of the most exciting red sires we have used to date.
52 602N
600N Sells as Lot 51.
602N Sells as Lot 52.
50-62.
HONOR GUARD SONS
603N
599N
54 601N
56
604N
57 518N
58 1120N
59 1061N
60 542N
61 754N
1120N Sells as Lot 58.
1061N Sells as Lot 59.
BIEBER JUMPSTART J137 Sire of Lots 63-65.
1090N
570N
Phenotype, performance, and carcass merit, all in one complete package. Jumpstart provides breed leading performance with tremendous rib shape, depth of rib, and length of body. The bulls in this sale look like their sire with eyecatching phenotype and explosive growth.
1090N Sells as Lot 63.
65 556N
967N Sells as Lot 66.
REDHILL BURLEY 99J Sire of Lots 66, 67.
875N
909N
COPPERHEAD 919G Sire of Lot 70.
1073N Sells as Lot 71.
71 1073N
72 1093N
73 919N
Stockmarket has to be the most proven herd sire in the Red Angus database. It’s not hard to keep using him year after year because he sires fault-free cattle. A stout, attractive genetically advanced bull that will improve looks and a broad base of numbers-an elite balance bull. Look at most of these Stockmarket bulls to utilize on yearling heifers. An outcross pedigree with the opportunity to make multi-trait improvement and phenotype in one package.
74 903N
75 1099N
BIEBER CL STOCKMARKET E119 Sire of Lots 71-75.
PATRIARCH F028 Sire of Lots 76-85.
This is the second year in a row we have brought all of our Patriarch bulls to Colorado. This group of percentage bulls again PAP tested low and have the power and performance that will add profitability to your calf crop. This Angus bull sires calves with low birth weights that grow fast.
TEHAMA
650N Sells as Lot 76.
ASR MS JOSIE C5168 Dam of Lot 76.
77 651N
651N Sells as Lot 77.
78 752N
80
514N
82 797N
649N
84 508N
1080N
The True North sons will moderate frame, add fleshing ability, and improve carcass value. Daughters will be the easy keeping kind with great udders, and will hold up in the harshest conditions. Buy his sons with confidence knowing that you will add proven, high quality genetics to your calf crop.
SQUARE B TRUE NORTH 8052 Sire of Lots 86-92.
929N Sells as Lot 86.
929N
997N Sells as Lot 87.
88 813N
90 503N
PAP-TESTED YEARLING BULLS
ROGERS Sire of Lots 94, 95.
92 814N
94 1086N
95 968N Homozygous
547N Sells as Lot 97.
97 547N
700N
98 548N
741N
100 1050N
PAP-TESTED YEARLING BULLS
101 932N
819N
A picture after our summer meeting with Dr. Holt. It was a great day discussing our plan to PAP test age-advantaged bulls near Walden at 8,100 feet. We appreciate his expertise.
102 890N
104 776N
105 847N
107 799N
108 674N
FIVE STAR JACKSON J10 Sire of Lot 106.
799N Sells as Lot 107.
PAP-TESTED YEARLING BULLS
109 676N
677N
111 1048N
GIBBS 8025F RANGER Sire of Lots 112-115.
113
591N
114 1109N
115
1110N
Once again, we are extremely pleased with our Ranger sons. They continue to be some of the most powerful herd bull prospects that we raise year in and year out. His daughters are continuously raising high dollar progeny which includes high quality udders and fleshing ability that is unmatched.
116 1064N
747N
118 746N
119 1077N
120 1004N
121 971N
Joe Spanel bringing up a bull for testing
122 933N
123 1558N
728N Sells as Lot 124.
739N Sells as Lot 125.
739N
124 728N
126 804N
1058N
128 822N
129 738N
130 773N
131 756N
1081N Sells as Lot 132.
964N Sells as Lot 133.
133 964N
132 1081N
134 1057N
1095N
137 838N
138 874N
139
564N
141 N5
143 727M
144 645M
145 951M
TJ WAR PAINT 759J Sire of Lot 143.
TJ BIG EASY 317F Sire of Lot 144.
TJ TROOPER 504J Sire of Lot 145.
HA JUSTICE 30J Sire of Lot 146.
KBHR BOLD RULER H152 Sire of Lot 147.
TJ GOLD 274G Sire of Lot 148.
146 505M
147 757M
148
720M
572M
151 1109M
PAP-TESTED AGE-ADVANTAGED BULLS
152 747M
153
1113M
155 1575M
1100M
157 946M
PROVEN.
Triangle J Ranch and this sale offering is backed by the most proven sires in the Simmental breed. Triangle J Ranch bred or owns 7 of the Top 50 Sires in the ASA database. As of January 31, 2026.
#1
KBHR Bold Ruler H152
