It sounds like you are thinking of this: 1988 Young Astronauts America In Space 3 Coin Set (there is a proof and a business strike version of this set) Picture courtesy of this website: https://www.mintstategold.com/us-1988-space-commemorative-three-piece-set.html
You are correct, as the young collector who I sold this coin would agree: https://www.ebay.com/itm/354849108188 Received last Saturday, and sold to him for a loss, at his price of ~20% under eBays' best average pricing! Another convert to Gold? JMHO
Just a misunderstanding, reside in MN, don't sell on the internet, but just locate desirable coins for young private locals, who have properly saved, and want a most desirable Gold "treasure/investment". An interesting current phenomena is that, as Gold spot price is declining, dealers are increasing prices, and selling! Coin "collecting" can be a very interesting, and if you properly understand, a "long term", relatively secure, investment "hobby"! JMHO
Especially since the coin is .9999 Gold, not .9167 as this: https://www.ebay.com/itm/3049951279...TQm+F8OtZIbKUAXHxOJXpyerA=|tkp:Bk9SR7yji4qhYg Fine Gold generally indicates virtually 100% pure! JMHO