Saturn V Launch Vehicle Exploding Bridge Wire (EBW) Firing Unit, with the main box measuring 6.5″ x 3.5″ x 3″, and an attached white 23″ length of cable. The top of the unit bears a George C. Marshall Space Flight Center metal tag, reading: “EBW Firing Unit 40M39515-127, Assy No. 48344 A, Serial No. 1021, Mfd by Simm. Prec. Gla, Norwich. N. Y., Accept Date 7/71, Wt (LB) 3.12.” In fine condition, with some wear and scuffing. Accompanied by a Marshall Space Flight Center log book for a different EBW Firing Unit. The EBW Firing Unit was used to activate charges for stage separation.