I just stumbled across Nicolas post from October 2017. Interesting enough I also own a Blancpain No Rad with the same type engraving on the case back. Nicolas says Inv.-Nr. 86/519 while mine says Inv.- Perhaps a batch of No Rads were reconditioned by the bund in 1986? Thanks, Seth
Pictured are my three Blacpain Fifty Fathoms with accessories. 1I Blancpain FF Milspec 1 on correct vintage Tropic strap with vintage Scubapro divers water temperature gauge. 2) Blancpain Fifty Fathoms Bundeswehr NO Radiation with correct Bundeswehr military markings and extra case back inventory NR