An Unusual Composed Pair of Flintlock Pistols

An Unusual Composed Pair of Flintlock Pistols with John Manton & Son Locks. With rifled twist barrels stamped below with what appears to be French proof marks, steel breeches, John Manton & Son locks, both numbered 7822, (I believe these have been taken from a sporting gun and re-mounted on these specially constructed pistols) full-stocked in the continental style with case hardened steel mounts, comprising blued engraved butt caps, foliate engraved trigger guards and white metal mounts.