IIRC there was a Belgian GM assembly plant also...but VIN no`s should reflect that...and yes in 60s ,there were no AC cars in Europe...my dad brought a brand new US bought Chrysler 300 K ( I forget the year, a 61?, 62?)to Sweden , it had AC and as far as I understand it was one of the first cars in Sweden with AC

everywhere we parked people would point and tell us we had a 'leak'....response was , "no its the AC"....which lead to."a car with AC?"

and Volvo, for instance didnt believe in AC, when my dad brought the first Volvos here in 56, they werte hot...even as late as in 68, 69 Volvo installed locally York units at dealerships...Volvo still didnt believe then that AC was needed.....today basically all cars in Sweden gets AC , for those "5 days of summer"...lol