Grumman XF9F-2 Panther Bu. No. 122475 takes off from Plant 4, large Published on November 23, 2013 in 21 November 1947Full resolution (1024 × 765) ← Previous Next → The first prototype Grumman XF9F-2 Panther at Grumman’s Plant 4, 1947. (Grumman)