Dang @goldenarms, those are some really interesting silver bars! Like you mentioned, I have never heard of some of those makers/banks, so they would probably cost a pretty penny. Do you usually try to get several of one kind or just one of a bunch of different things?
For these I'm trying to get as many different versions as I can. If i pick up any locally at a good price I already have I try to trade them with other ppl for ones I don't