From what little I've been able to research it looks like a British 1821 model, but with a VERY prominent pommel nut. The only marks on it are an armory mark on the back "406" (also marked on the scabbard) and the initials "RGA" under a large cypher, consisting of a large "R" with an "A", "F", and "C" around it. There's no crown, so I'm unsure what to make of the cypher. It's been suggested that RGA might stand for "Royal Garrison Artillery" but past that we're at a loss. Anyone out there perhaps have a better clue?
I have a full size pic on here that won't display but is available as an attachment. Can't figure out why it won't display...





[ Download ]