I would not be comfortable having my snuff in contact with copper. Am I wrong?
Probably not. I’m a little concerned about this too, especially given the ammonium compounds in many snuffs. Ammonia readily dissolves copper, and copper compounds are toxic. I’m going to use my boxes with dry snuffs only and keep a close eye on things. It might be a good idea to tin the inside of the box, maybe I’ll attempt to do that on the next one I make.
Well, my uncle always believed, as have countless people through the centuries, in the benefits of wearing a copper bracelet on his wrist, and he died when he was in his late eighties. Then again, people have raised concerns regarding aluminium leading to memory loss, but that’s what F&T ‘tins’ are made from, and I’ve had almost half a tin of Old Paris to no ill effects at… What was I saying?
I received my British 1967 coin this morning (my DOB) these are wonderful, the workmanship is fantastic. Highly recommended Even better when its holding Mull of Oa! … Oh and burnt toast is carcinogenic, I doubt my snuff is in it long enough to erode the copper 
http://coincrafts.myshopify.com/
@HR_pufnsnuff
My Snuff is not in these containers or more than a days snuffing , I use then as a daily box, not a snuff storage container , so no issue here…
Hey, I’ve been adding to a newer discussion about coin snuffboxes. I’ve got some varnish and I’m coating the innards of mine (French 1978 10 Franc coin). I’m on to my second coating and when dry, I will post up the results. http://snuffhouse.org/discussion/8917/snuffboxes-made-from-coins#latest
It’ll be interesting to see the results, but I bet someone will post about the hazards of varnish. Still, you’ll have a great finish! 