Lots of great world silver suggestions. Just have to decide if you are collecting world bullion or " World Bullion " . Most of these coins can't be bought for spot plus.
I collect " World Bullion " and pay a hefty premium for some of the coins others have mentioned. For my silver stash I have some of the same world coins but mostly,
ASE, Maples, Philharmonic's , and some Libertads, and Britannia's I got for spot plus.