This recent find comes from Estate of Retired BOEING & NASA Marshall Space Flight Center Aerospace Engineer that worked on the early Saturn/Apollo to Shuttle Missions - NOTE: After retirement previous owner was a Archives/Curator at "THE SPACE and ROCKET CENTER" (SPACE CAMP-Huntsville, AL.) Where he also was able to Obtain a large Collection of Purged Archived items if after notified original donors did not re-claim them.  Listing is for a LOT (4) of NASA APOLLO SKYLAB 1&2 FLOWN MEDALLION COIN, BOOKS AND BROCHURE. Details for included items are listed below:

SKYLAB AWARD FLOWN METAL MEDALLION and CERTIFICATE (aboard Skylab May 14, 1973 - February 8, 1974) - MANNED FLIGHT AWARENESS
SKYLAB (Wizard of Id) INFORMATION BOOK MCDONNELL DOUGLAS with cover art created by J. Hart 84 pages with fold out (3-7.8"W x 6-3/4"H)
SKYLAB 1&2 SCIENCE & ENGINEERING IN ORBIT - 8 printed pages - 1973
NASA MSFC HONOR AWARDS 38 pages 10.5"W x 8"H - 1972

Note: International orders are taking a little longer to get through customs in some Countries because of pandemic but will be shipped Priority for tracking purposes...   Please see all Pictures and Condition description and to see More Vintage/Antique Collectibles from this Estate other Estates and several Picks just Click on my Store link and Thank you for Looking...