Sloe Bear,
it came from a mate who lives on an island near the mouth of the River Murray in South Australia, it is a marine environment, I was given 2 other rifles as well, both Parker Hales, a .451 and a two band Navy rifle. All looked pretty rough on the outside, but he kept the bores in really good condition. He was not into appearances, so all three rifles look well aged, heaps of patina, which I have pretty much left and only done mechancal repairs to get them all shooting again. I did refinish the two bander, oil finish and it looks like it is 150 years old, well used and somewhat looked after. I still have to refinish the new lock on the long rifle, a winter project after seeding.
cheers
Heelerau