11 Ott BWC D.
CASE : Chrome plated, 34 mm .
BACK : Screw, steel .
“ Rostfrei “ , “ Stahlboden “ , “ Wasserdicht “ and S/N .
A number is punched inside .
MOVEMENT : AS 1130, grene ( brass) . Name of brand on the ratchet bridge .
CASEBACK MARKINGS: D. only
Letter and numbers have the same size ( 1 mm )
S/N : 5 digits . The number of registered watches is small ( 15 ) , however , the range may be 111XX / 146XX .
NOTE : S/N are purely indicative .