The picture below shows the (2) Old Multi Color Spaceman Related Plastic Key Chain Puzzles in this lot. These are all believed to be from the 1950s. These brightly colored keychain puzzles were sold in stores. One is a space Ray Gun, and one is a Rocket Ship or a Space Ship.
To judge the sizes the Ray Gunmeasures about 2-3/4" x 1-1/2" x 3/4". They appear to be complete and in mint condition as pictured.