Hermetically sealed relay box assembly associated with an unidentified Rocketdyne bi-propellant liquid rocket engine, measuring 10.5" in diameter and 4" deep, with a Rocketdyne tag reading: "Name: Eng. Relay Box Assy. Part No. 50035-31…Ser. No. 169R." Stamped "Rev. Date Tested" twice at the top, with dates from July 6, 1959 to November 18, 1961.
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