I don't mail physical letters very often. I don't buy stamps often, either, and I rarely know off the top of my head what the US postal rate is for a first-class letter. When the stamps themselves don't in any way indicate what they're worth, and I have an eclectic assortment probably dating back to the mid-eighties, that adds an extra dimension of fun.
This page is very useful.
This page is very useful.
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Thanks for the link.
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