1917:
British Gold Shell Ring Co Ltd
The British Gold Shell Ring Co - Aeroplane Pressings & Stampings
Rec. Num. 1 of 2
Source: Aeroplane May 30th 1917
1917:
British Gold Shell Ring Co Ltd
The British Gold Shell Ring Co, Hounslow. AGS Shackles A & B
Rec. Num. 2 of 2
Source: Aeroplane November 14th 1917