NGC 3532
This cluster was discovered by Lacaille and included in his 1755 catalogue as Class II No. 10. In his half-an-inch 8x telescope he saw it as a "prodigious number of faint stars forming a semi-circle of 20/25 minutes diameter."
Dunlop 323: "a very large cluster of stars about the 9th magnitude, with a red star of the 7-8th magnitude, north following the centre of the cluster. Elliptical figure: the stars are pretty regularly scattered."
John Herschel was very impressed with the cluster, including it in a list of 'greatest hits': "Among the nebulae which occur from 9h to 12h we have .. the beautiful planetary nebula [NGC 2867], a perfect planet in appearance, with an attendant satellite; the falcated nebula [NGC 3199]; Eta Argus with its nebula; the superb cluster [NGC 3532]; the blue [Herschel's italics] planetary nebula [NGC 3918], a most exquisite and unique object ; and the beautiful cluster of various coloured stars about Kappa Crucis [NGC 4755]."
His first observation [3532] recorded the "Chief star of a very large, round, loosely scattered cluster of stars 8..12th magnitude, which fills 2 or 3 fields. A fine bright object." His next observation recorded "The chief star of a superb cluster, which has several elegant double stars, and many orange-coloured ones." His third observation reads: "A glorious cluster of immense magnitude, being at least 2 fields in extent every way. The stars are 8, 9, 10 and 11 mag, but chiefly 10th magnitude, of which there must be at least 200. It is the most brilliant object of the kind I have ever seen."