In my 18-inch f/4.5 Dob it appeared faint, small, diffuse, and not at all resolved at 94x.  I was struck by how comet-like it appeared at first glance, looking more like a telescopic comet than most other globulars.

Walter Scott Houston claimed that, "Large telescopes may show it with a clumpy appearance, but I doubt it can be resolved in any amateur instruments."  It's not clear to me when he wrote these words.  Perhaps they were written before large aperture amateur instruments became generally available.  In my 18-inch f/4.5 Dob at 430x I was able to resolve the majority of the brighter stars to within about 10% of the cluster center.  Most strikingly, this globular displayed a hazy outer envelope of faint, unresolved stars, surrounding the partially resolved central region.  This makes an interesting contrast with the other globular in Delphinus (NGC 6934) which can appear in the opposite sense; with a halo of resolved stars surrounding an unresolved central region.