cards/rocket engines. Says: Aerojet Liquid Rocket Company, Sacramento, California. Two decks(complete with 2 jokers each) in a black plastic case with a clear top. One set is red on white with a black frame, the other set is black on white with a red frame. Used slightly, but in great condition. No date, but circa 1970s. Pictures: 1) in closed case; 2) showing examples of cards with two decks in black case bottom and clear plastic top(cards laid out are black and white with red frame); 3) cards taken out of black bottom and empty black bottom; 4) cards in plastic bottom with clear top taken off. This set is from the famous Aerojet Liquid Rocket Company, which manufactured, designed and tested liguid rockets for space and the military. See 'Handbook/Liquid Rocket Engines, also listed on Ebay, for more information.