Bi metal Royal Artillery Grenade Badges -collar like

[Mike]

I've put these aside over the years due to lack of clarity as to what they are. Officers' FS Cap badges I thought- but searching the forum I see we have them identified to a specific RA unit. Any opinions? period?

I was going to add them to the database, but it would be handy to have some confidence as to what they are first!

Anyway, two have silver plated scrolls, probably gilt grenades

One by Ludlow, one by Gaunt, other unmarked.

If anybody wants one £12 to a uk address. I'll keep one- I don't mind which, thus two available.