Apollo Saturn V Third Stage Continuous Vent Regulator Module made by Wallace O. Leonard Inc., measuring 7.75″ x 9.25″ x 7″, with a NASA George C. Marshall Space Flight Center plate at center: "Module Regulator, Continuous Vent, Assy No. 217010-6, DAC Spec. 1B51753-511U, Contr. No. NAS7-101, Ser No. 021, Date 7-68."
