Spherical propellant tank developed by the Marquardt Corporation for a spacecraft attitude control system (likely for the R-6C or its predecessors), measuring approximately 9.5″ in diameter with a 2″ long propellant valve. Includes a maintenance tag from Marquardt Jet Laboratory—Van Nuys, in part: "Propellant Cleaned at MJL-VN…Date: Jul. 31, 1964." In fine condition, with one of the valves bent.
