T69 (tank)

A medium tank with an oscillating turret mounting a 90mm cannon with a nine-drum autoloader. It held a crew of three. Developed on the basis of the T42 experimental medium tank in mid-50s. The vehicle never entered mass production.

The T54 was a series of prototype American tanks of the 1950s. The turret on T54E1 was similar to that of the T69 in its oscillating design and in that it held a crew of three and a nine-round drum autoloader under the gun.