Missile, Surface-to-Surface, Minuteman II, Post-Boost Propulsion System

Cylindrical with gray metal rim on top and smaller diameter olive drab lower section; inside cylinder, looking down through rim, are two shiny metal tanks of same dimensions, one on each side of circle, and aluminum coil in center of circle, this coil connected with other thin aluminum pipes circulating around assembly below; four small equidistant nozzles with oval openings set flush around inside wall of cylinder; one of the tanks is marked, on respective white stickers with black lettering, "Fuel" and the other, "Oxidizer"; smaller metal sphere lodged below this assembly and is marked "Helium," this tank serving as the gas pressurant for the propellants. Also comes with three loose, separated extra nozzles, non-ferrous; one with 4.5 inch outside diameter and 9 inches long, and other two 4 inches each in width and 7.75 inches long. Additionally comes with sealed cardboard box with other parts but this box un-retrievable and not inspected by curator upon inspection of artifact on 5/14/03.