1931:
The Moss Gear Co Ltd
Moss 4 Speed Motor Cycle Gearboxes 1931 Advert
Rec. Num. 13 of 14
Source: The Motor Cycle September 24th 1931
1932:
The Moss Gear Co Ltd
Moss Gears - Moss 4 Speed Motor Cycle Gearboxes 1932
Rec. Num. 14 of 14
Source: The Motor Cycle January 14th 1932