Thanks again to everyone for their time on this. A great debate - if a little frustrating. Jef thanks for touching base with your contact at Heuer.

Lots of interesting parallels with the classic car world. Porsche made a 356 T6 cabriolet. Some of these were built under contract in Brussels. A small number at the end of production were made using assorted body panels from a range of 356 models. They are now ultra rare and highly collectable. Shame the same isn't true about my watch!! Another parallel - if you restore a classic car you usually replace all the damaged trim with as original trim right?

Anyway guys please continue its all useful stuff for collectors and wannabe collectors like myself.

Cheers,

Nick