Mercury thruster plug used during recovery operations. Plug measures 7.25″ long, with a metal loop at one end and a metal and rubber conical shaped plug at the other end. Accompanied by a letter of authenticity from Ed Pavelka, who was the Chief, Operations Division, and was at NASA for over 30 years, stating “this is a Mercury thruster plug that was used during recovery operations.” RRAuction COA.
