This passport was issued to an Uruguayan legal citizen born in Poland. The place of birth is identified as Poland but the nationality of the passport holder is also identified as Polish instead of Uruguayan. The machine-readable zone (MRZ) contains the three-digit nationality code for Poland, POL. What is of note is that the United States visa, which also has an MRZ, changed the nationality of the passport holder, for purposes of the Visa, back to "Uruguayan." You can see the three digit code in the Visa URY.