OK, I'll rise to the fly dangled in my face

First, though, I should apologise to those who've seen all this before elsewhere. You may go off and play quietly among yourselves until it's gone away again.
The set itself:

SG 45-53
was issued in 1931. Gibbons says this about it:
'This issue was the subject of speculative manipulation, large stocks being thrown on the market cancelled-to-order at very low prices and unused at less than face value. The issue was an authorised one but was eventually withdrawn by the State authorities.'
It is certainly readily available (for an Indian States issue) CTO quite cheaply, and even mint at fairly modest prices, considering the face value of the set. All sorts of errors are also available, often at very low prices. The printers, the Batliboi Litho Works of Bombay, were probably involved with the 1935 set of Orchha (SG 8-30), which was even more 'manipulated', which is rather suggestive.
Nevertheless, the set makes quite an interesting little study. Most values come in a good range of shades, unlisted in Gibbons or elsewhere AFAIK. All values also come perf 11, 11½ or 12, and I've found many of them in compound perfs as well. Most of the perfs are are common to very common, although there are one or two that are a bit harder to find.
Bearing in mind Rodney's suggestion that I put some more meat on the bare bones, I went off in search of details of the scenes on the stamps ... and came up largely blank. Neither my invaluable 1949 edition of
Murray's Handbook for Travellers in India ... nor the Lonely Planet India volume thought Charkhari worth mentioning.
However, a bit of rummaging on the Web
did throw up this video montage, without captions, of Charkhari Town
http://bundelkhand.in/portal/Video/...ttar-Pradeshwhere many of the scenes appear to be those on the stamps.