Yes. Used stamps have a value as a collectible even if they can not be used again in mailing letters. Most philatelists assemble a cancelled stamp collection because they are more rewarding to collect that the mint stamps.Click to see full answer. Beside this, are old postage stamps worth anything?Old postage stamps, especially the rare stamps, are worth more than the newer stamps. The value of old postage stamps depends on the availability of similar stamp specimens. This means that the rarer your old postage stamp is, the more valuable it will be.Additionally, how much does it cost to have a stamp collection appraised? Stamp Collection Appraisal Key Info Appraisals are not free – many stamp dealers charge about $50 an hour with an average collection taking a few hours. For high value collections this can be a cost effective way to get an idea of the collection’s value. Similarly, you may ask, what stamps are worth a lot of money? The 10 Most Valuable U.S. Stamps The Inverted Jenny. (Courtesy of Siegel Auction Gallery) 1847 Issue Block of 16 of Ben Franklin. Almanac Stamp of 1765 or 1766. ‘Blue Boy’ Alexandria Postmaster’s Provisional. 1869 Pictorials—Inverted Center Errors. Two-Cent Blue Hawaiian Missionary. 1860 Stolen Pony Cover. Pan American Inverts. Can you cash in postage stamps?No, but you can get cash for your unused forever stamps here. The US Postal Service does not buy back stamps but our service allows you to sell your unused stamps. *Please note, we do not purchase old stamp collections. We purchase unused US postal stamps; stamps in good condition in booklets, sheets or coils.