Help needed with U.V.F cartouche stamped Martini Henry Carbine with Horse head stamp

[breakeyp]

No markings other than commercial proofs and the horse mkg. Receiver corners are sharp indicating receiver markings have been draw filed prior to rebluing. It came with a Long Lee clearing/cleaning rod. The band accepts a bayonet but the normal bayonets (Pattern 1888, Pattern 1903 and Pattern 1907) do not fit suggesting it was just used and not set up to be functional.