Royal Regiment of Artillery Collar Badges
 

Variations of the Officers Service Dress bronze collar badge.

Stamped FIRMIN LONDON

Small plate J R GAUNT LONDON

Some more.

Oval plate FIRMIN LONDON.

No marks.

And another pair, two piece.

Soldiers versions.

Universal in brass, also used on the shoulder straps.
Nine flames in brass, stayed with the Corps of Royal Engineers.
Seven flames in brass large size as Officers bronze.
Seven flames in brass reduced in size.