CASE  :  Chrome plated  ,  34 mm

BACK  .  Screw,  steel .           

                Besides the S/N it shows “shockresist” and , circularly , “wasserdicht”  and  “stahlboden”.

MOVEMENT  .  AS 1130 .
                          It is branded  “ selza ltd “  or  “selza bienne”

CASEBACK MARKINGS:  D.  only .
                       Letters and numbers are small ( 1mm) .

S/N  .  6 digits . Frome the registered watches (14) the range may be   507XXX   /   509XXX  .

NOTE  .  Range is purely indicative .