NASA First Day Covers Stamps Commemorative Coins 1974-1991 Set Of 19 Ultra Rare

This collection of 19 NASA First Day Covers with commemorative coins from 1974 to 1991 are highly collectable and likely to increase in value. Highlights include Skylab FDCs with silver or brass coins, marking pivotal missions like Apollo-Soyuz and Skylab, with some individual pieces fetching $40 or more. These NASA FDCs and coins are an awe inspiring part of space history. This collection is sold only as a set. Condition: The 1974 N.A.S.A. First Day Covers are in their original sealed wax paper envelope, and never opened. All of the other sixteen FDC are in excellent condition, coins appear untouched and in mint or near mint condition. I package every item (in a smoke free and super clean environment) and ship it out with the utmost care. I'm a retired guy who loves selling on Poshmark. If you have any questions, please contact me!