HELVETIA D.H.

 

HELVETIA  D.H.
CASE . Chrome plated , 34mm .
            Very often , on the back of the right upper lug are punched three digits : they correspond
            to the last three digits of the S/N punched inside the back .
BACK . Screw  ,  steel .
            Outside only shows the S/N and the Helvetia code number ( 3190).
            Inside there is a punched number .
MOVEMENT . Helvetia “ Cal. 82/A “.
                       The brand’s name is on the ratchet wheel .
PUNCHING .  D.H. only .
                    It is small and uniform .
S/N . 5 digits . For a very small number of watches it is 3 0r 4 digits .
        From the registered watches ( 75 ) , it tourned out that the batches could be 4 :
        1.  3 or 4 digits  :  3Xx  /  94XX ;
        2.  5 digits  :  100XX  /  129XX  ;
        3.  5 digits  :  150XX  /  280XX  ;
        4.  5 digits  :  331XX  /  356XX  .
NOTE .  Batches and S/Ns are purely indicative .