CASE . Chrome plated , 33 mm .
BACK . Screw , steel .
It only shows the S/N and the manufacturer’s symbol ( helmet )
MOVEMENT . There are two movements :
1. AS1130 modified and brassed . Probably the first version of AS1130 .
2. FB 2075 ( Bernard Foerster ) . It is fitted with the dust-cover instead of stop ring .
PUNCHING . D.H. only .
Letters and numbers are small and uniform ( 1 mm ) .
S/N . 5 or 6 digits .
– 5 digits for watches fitted with AS . Range could be 027XX / 154XX .
– 6 digits for watches fitted with FB . Range could be 021XXX / 044XXX .
1. HADO is a sub-brand of HELMA ( thisis the reason for the helm ).
2. S/Ns are ourely indicative .
HADO AS 1130
HADO FB 2075