I picked up an interesting British Enfield at auction on New Years Day, and can't turn up anything much on it online. The lockplate clearly says Enfield 1866, and has the crown mark and VR. What's baffling is that every reference I can find to an 1866 Enfield concerns the Snider-Enfield breechloader conversion, which this is definitely not.
Also, the barrel, trigger guard, and some of the other metal parts have been extensively engraved (what looks to be a stylized cheetah or leopard and gazelle in some areas); and the stock has been inlaid with what's probably bone, including camels on the buttstock (both sides). I've attached some pics that show the whole gun, close-up of the lockplate and hammer/nipple, detail of the inlays and engravings.
I've seen "WD" on several of the parts, and I understand that this means it was military issue. Possibly it saw action in North Africa, and was engraved after falling into private hands?
In any case, it is going to look very cool hanging on pegs in my log home that's currently being planned.