It is an 1885 then. I don't remember why or who but someone told me that the 78's were also marked 1885 for some reason. Glad to get this cleared up.
Firstshirt,
That mounting to the wood idea does not sound so good, might be okay but I wouldn't like it. The Williams sight may be pretty high but I think I will give that a try. The scope interfering with hammer is the problem and I like having some guns around with peep sights(71 Winchester, 8 Rem., 81 Rem.,39 Marlin).