William Herschel discovered NGC 3672 = H I-131 = h886 on 4 Mar 1786 (sweep 597) and reocorded "cB, E, 4 or 5' long and near 4' broad, gbM."
Andrew Ainslie Common probably found this galaxy in 1880 with his 36" reflector, assumed it was new, and reported #17 as "pB, L, bM, E 180°" in his Copernicus discovery list.
200/250mm - 8" (5/21/82): faint, diffuse. Located 20' W of a mag 7.5 star.
400/500mm - 17.5" (3/29/85): fairly bright, fairly large, oval 2:1 N-S, weakly concentrated to the center. Brightest in a small group that includes NGC 3636 and 3637 (LGG 235 = USGC S165).
Notes by Steve Gottlieb