Unusual United States Stamps!!! As I am not a collector of US Stamps, perhaps these are not so unusual, but I had never seen Treasury or Interior Stamps before. Two small collections with 'fancy cancellations' on offer Not one of my own offerings but perhaps of interest to someone here. http://www.my-little-auctions.com/item.php?id=80966 http://www.my-little-auctions.com/item.php?id=80965
I know from the American Philatelist Magazine that they are quite popular. They always seem to be in the top ten of stamps being sought for circuits indicating they are in short supply relative to their popularity. In that sense they are indeed unusual.
