I have a percussion pistol I purchased 40-50 years ago. It is marked Holland Banbury on the left side. The main body is all engraved brass. The hammer has little marks on it that looks like fish scales. The wood grip looks like cherry and has flat sides and a rounded butt. On the underside of the round barrel is a little slotted piece of metal with what looks like crossed swords? in front of it. Just behind it, on the brass in front of the wide trigger guard is another stamp that looks like crossed swords. I do have a bill of sale for the weapon, (if I can find it) where it shows it was originally purchased at a shop in England in I believe it was the 50's. I think it is probably somewhere in the 50+ caliber range. It is excellent condition. No serious pitting, no cracks in the wood. Will post pictures as soon as we can get some good ones taken. Thank you.