. . . yet another rare "prototype", in New Old Stock condition, with a "guarantee" that it is a genuine Heuer.

I do not believe that Heuer produced this prototype, but will stand corrected if others have different information. I have seen these cases and dials offered through various channels . . . can anyone offer conclusive proof that they were either assembled or not assembled by Heuer?? some of the parts may be genuine, but can anyone offer theories as to who did the assembly of these parts and when??

thanks,

jeff