Hello, welcome
There should be a chassis plate inside the boot (RHD, so on the driver's side near the dash cluster). That plate has the chassis no. , paint no. and model year. There's also a seperate chassis no. stamped into the bodywork inside the boot, either on the right hand suspension tower (on early models) or near the middle of the boot (might have to lift up the rubber carpet to see it, though there should be a flap on the carpet which will reveal the number).
If it says FSM on the chassis plate then it was made in Poland.