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Mike HThe SCD baseball card annual price guides have a number of the pin "sets" listed as does the non-paper memorabilia guide Hake put together years ago. Although the Hake guide has very dated pricing, it is the most complete guide to sets and a few oddball pins I have seen. It's been out of print for years but do show up on Amazon from time to time. As someone mentioned on an earlier post, I love the lack of price guides for memorabilia.