Heater assembly associated with a Marquardt R-4D Rocket Engine/Lunar Module Reaction Control System (RCS), measuring approximately 4″ x 2″ x .5″, sealed with its data card reading: "Nomenclature: Heater Assembly, Manufacturer: Cox & Company, Inc., Serial No. 449, Manufacturer's Part No. 2253-12, GAEC Control No. LSC310-601-12 Chg. Ltr. J, Contract No. 4-01360 NAS9-1100, Cleanliness Level: Level C of LSP-14-0011, Date of Packaging: 8/25/67." In fine condition.
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