I would think that there are some out there as I have a couple on the topic of German tokens, which I think would be a more obscure topic. In addition to Krause, I have the 2009 Blackbook Price Guide to World Coins, but there is not a tremendous amount of coin info in it.
In case you have interest in German tokens, I have:
(1966) Catalogue of German War Tokens, the Municipal Issues 1914-1921, by Robert A. Lamb
(1988) German Tokens Part II Colonial Issues, Austria, Luxembourg, Switzerland and Other Areas, Jerry F. Schimmel
Red meat is not bad for you, fuzzy green meat is bad for you.
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