Argo I bought this rough Reilly double hammer rifle in .577 Snider a couple of weeks ago. Here's the auction house description.

E.M. REILLY, LONDON A .577 (SNIDER) DOUBLE-BARRELLED HAMMER SPORTING RIFLE, serial no. 16720, circa 1877, with laminated 26in. barrels, plain raised top-rib with traces of maker's address, bead fore-sight, standing notch rear-sight with three further flush-folding and engraved leaves, border and scroll engraved action with swing under-lever, border and scroll engraved locks signed 'E.M. REILLY', non-rebounding hammers with bolted safes, chequered walnut pistol-grip stock with iron furniture, chequered walnut splinter fore-end (small inlet repair, remodelled at tip) and with cross key fastener, fitted with eyelets for a sling.
[Linked Image from i.imgur.com]
[Linked Image from i.imgur.com]
[Linked Image from i.imgur.com]
[Linked Image from i.imgur.com]