Nice collection, I collect a bit my self, great Dickson Bore Rifle packet where did you find that ?
I recognize a lot/most of them, but what is that short copper pistol looking round, looks a bit like a .577 Boxer almost, not the one that looks to be Rimfire, the one that the case appears to go over the projectile ?
Again some cool rounds there !
It's a danish 17mm Tap rifle. Its a conversion rimfire cartridge from early 1850s. Very rare..
The 12 bore plnfire rifle cartridges was given to me by a guncollector.