Regulator 6 volts mechanical, PP31 reproduction

Mechanical 6V regulator for all bikes and vehicles with DC-generator like BMW / EMW / AWO / M72 / K 650 / K 750 etc.
Matches the old Bosch regulator and the Russian reproduction PP31 which was used till 1953.
Very heavy duty finish, polarity is no object.
Dimensions L x W x H: 143 x 110 x 60 mm
Connections:
W = Sch or DF (to field coil), AW = cyrillic YA (mirrored R) or D+ (generator power output_DC = b pr B+ (connection battery or control lamp), sideway connection = earth to connect with the frame
Weight: 1335 grammes