11 Ott MOERIS D.H.
CASE . Chrome plated, monoblock, 33mm .
BACK . Screw, steel .
It usually only reads the S/N . On some watches also “ fond acier inoxidable “
MOVEMENT . Moeris “ Grand Prix 10 1/2 C “.
The brand name and Cal. type are on the wheel bridge while
“ Bruchsicher “ is punched on the ratchet wheel .
PUNCHING . D. H. only
Letters are larger ( 2 mm ) than numbers ( 1,5 mm ).
S/N . 7 digits . Considering the registered watches ( 55 ) ,
the range may be 2555XXX / 2897XXX .
NOTE : S/Ns are purely indicative .