Albert Marth discovered NGC 6988 = m 430 on 15 Aug 1863 and noted "eF, pL, R." His position is nearly 2' southeast of CGCG 425-020 = PGC 65732 (the only nearby candidate).
400/500mm - 17.5" (7/20/90): very faint, very small, oval NW-SE, even surface brightness. A mag 15 star is at the SE end 23" from center.
Notes by Steve Gottlieb