There are three machines, with 4 designs each (12 total). Two of the machines are on the ground floor near the gift shop, I didn t look for the third but it s supposed to be near the cafe. One of the machines near the gift shop only takes paper dollars and is preloaded with pennys, the other will cost $1.01.
CommentsUpdated Smithsonian National Air and Space Museum - VidSon
Machine 4, coin slot gets stuck, can use if you push down on coin slot while inserting coins - Surfinallover
Updated Smithsonian National Air and Space Museum - VidSon
thegillion added to system.