That is the general response that I get everywhere. I just wonder who and where it came from? My Bird also has very different fender skirts. Has 4 slots cut through, with chrone hash bars (similar to the ones on the front fenders) to simulate louvers. Also the stone geard and moulding appears to be Aluminum. I suspect european because tiny brass nuts and studs hold the hash bars on. Like Jaguar Bently, and my prefect etc. used.
Sounds like some one has modified the car. No Tbirds were made outside the US except in Mexico, and these basically were kits supplied by Ford to Mexico.