Check the listing for details. US Postage Stamp Lots (10x Blocks of 4) Collection Vintage Antique 40+ Unused. Listed at 5.60 USD. We are selling a Vintage/Antique US Postage Stamp Collection by breaking it up into tiny lots in glassine envelopes You will receive: 10 blocks of antique stamps per glassine envelope - all stamps will be excellent condition and unused. Most of the blocks are 4 stamps, but we also ran into blocks of 6 and included them as they were, so you may get more than 40 total stamps in your envelope These are all very old postage stamps, from many years ago before the age of "self-adhesive" stamps. To use these you must lick or otherwise moisten the back to activate the glue. A variety of different random blocks in each lot. No repeats! (if you buy more than one envelope the chance of repeats will be introduced) --Thanks for looking! :)Please message me if you have any questions.