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PROTEX  D.U.

11 Ott PROTEX  D.U.

CASE  Chrome plated  ,  34 mm .

BACK  .  Screw,  steel .

           In addition to the S/N it shows  “wasserdicht “  and  “stahlboden “

MOVEMENT  .  AS 1130,   no name 

PUNCHING  .  D .U.  only .

                        Letters are larger (2mm) than numbers (1mm)  .

S/N  . Only four watches were registered and all were punched D. 497 U

NOTE  .

           It is very strange that all registered watches have the same S/N but it is even stranger that

           this S/N appears on Flora D.U. ( not available on this blog ) .

           Over the years  I have registered 3 Flora DUs and all with the same S/N (497).

           This fact may give rise to some doubt about originality of this watch but , on the other hand ,

            this number ( 497) is probably not a S/N but a builder’s code ( i.e.: Helvetia , Frenca ) .