Albert Marth discovered NGC 6447 = m 348, along with NGC 6446, on 9 Jul 1864 and noted "vF, S, R." His position is accurate. Rudolph Spitaler rediscovered both galaxies on 26 May 1884 while observing Comet 1858 III (AN 2601).

400/500mm - 17.5" (8/1/89): fairly faint, fairly small, elongated N-S, brighter middle with faint extensions. Forms a close pair with NGC 6446 1.9' W.

Notes by Steve Gottlieb