Legendary Gemini IV & Apollo I astronaut EDWARD H. WHITE II incredibly scarce hand signed Gemini IV spacewalk photograph signed on mat. Countersigned by astronaut and Gemini IV Command Pilot JAMES McDIVITT.  Large, nearly 7" White signature on impressive 20" x 24" display. Photo is mounted to backing board/mat. CERTIFIED AUTHENTIC BY JAMES SPENCE (JSA) Authentication Services EXPERT EXAMINATION. Sale includes original JSA Letter of Authenticity.  The SIGNATURIST-INK has dealt in dozens of APOLLO autograph items, authenticated across the board by respected names such as PSA/DNA, JSA, and ZARELLI SPACE, and is one of the most respected and trusted sellers of Apollo autographs.  Gemini IV lasted from June 3 - 7, 1965. It was the first flight to have an American walk in space. Light fading and toning overall. Condition is as shown. UNCONDITIONALLY GUARANTEED AUTHENTIC. A one-in-a-lifetime remarkable investment-grade addition to a museum, the executive office, or for the space and aviation collection. Sold as is, as shown.