CASE  :  Chrome plated,  34 mm .

BACK  :  screw,  steel .

                   “ Stahlboden “ and the S/N . 

MOVEMENT  :  AS 1130  no name .

PUNCHING  :  D.H.  only 

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

S/N  :   2, 3  or  4 digits . From the registered  watches  ( 17 ) the range could be  9X  /  28XX .

NOTE  :  S/Ns are purely indicative .