ONDA  D.

CASE  .  Chrome plated,  34mm . 

BACK   .  Screw,  steel .

            It reports the S/N and “ stahlboden” .

MOVEMENT  .  AS 1130, no name .

CASEBACK MARKINGS:.  D.  only 

                     Letter is larger ( 2mm) than numbers (1,5mm) .

S/N  .  6 digits . From the registered watches (12) the range may be  635XXX   /   656XXX .

NOTE  .  Range is purely idicative .