A mid-19th century percussion Coast Guard or

A mid-19th century percussion Coast Guard or Constabulary pistol, the 15cm sighted barrel with various proof marks and captive ram-rod below, having and engraved dolphin hammer and border engraved lock with a crown V.R. cypher over Tower and dated 1849, the walnut stock with steel belt hook and brass furniture, stamped to the stock W.Scott, 29cm.