Apollo Saturn V Third Stage Cold Helium Fill Module, measuring 7.5″ x 6.5″ x 6″, with a NASA George C. Marshall Space Flight Center plate at center: "Module, Cold Helium Fill, Assy No. 659-511N/C, DAC Spec. 1B57781-511AL, Contr. No. NAS7-101, Ser No. 0034, Date 5/70."
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