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I sell (and buy) quite a few stamps, and most items tend to fit within a standard #10 envelope and also have a value in the $5 to $20 range. Since they are not 'packages' the USPS won't track them without Registration ($16!), and other services like ...

Let me start by saying that I know Catalog numbering systems are essential for our hobby, and that Scott has done a good job for a long time. But the hobby is changing, and the current system from Scott/Amos seems to me to need some major changes. Ma...