CASE  .  Chrome plated,  34 mm .

BACK  .  Screw,  steel .

           Outside shows the S/N and “stahlboden “.

           Inside , not always , there is a number  punched . 

MOVEMENT  .  AS 1130 , anonym .

CASEBACK MARKINGS:  D. H.  only:

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

S/N  .  6 digits . From the registered watches ( 22) , the range may  be   538XXX   /    598XXX .  

NOTE  .  Range and S/Ns are purely indicative .