Haa!! That is amazing! This car was also made in Serbia until the 1977, under name "zastava"! There were a 1300, 1500 + caravan. You can still see them a lot here, and when they are in a good condition they are good looking cars!!!
Although Polski Fiat 125p shares the design of exterior and brakimg system with Fiat 125, its other parts (engine, chassis) come from the Fiat 1300/1500.
What an unusual find!