Saturn V launch vehicle Exploding Bridge Wire (EBW) Firing Unit mounted on a 19 x 8 plywood board, with a George C. Marshall Space Flight Center metal tag reading, “EBW Firing Unit 40M39515-127, Assy No. 48344 A, Serial No. 1027, Mfd by Simm. Prec. Gla, Norwich. N. Y., Accept Date 8/71, Wt (LB) 3.27.” Both the metal tag and board bear red stamps designating the equipment as “Non-Flight.” In fine condition. The EBW Firing Unit was used to activate charges for stage separation. Provenance: Charles Bell Estate.