I must say, I find it very refreshing to find Jubilee starting a thread with a George VI era issue from Bahawalpur

But for interesting perfs, there's really little need to stir outside the Indian States, and even very far from Barwani ...

Barwani SG 6a, the 1921 ½ Anna stamp. This was originally issued imperf, and later released with the sheets perf across the middle only like this. The stamp is slightly cheaper in this form than imperf (£5.50 imperf; £5 perf)
Then, you want syncopated perfs? I give you syncopated perfs: SG 18c of Barwani (the 1923 ¼ Anna rose), perf 12 or 6, according to which end of the device struck the paper. "For reasons unknown but time will tell" (Lucky in
Waiting for Godot) every second pin of a 12 gauge perforator was blunted along parts of its length:

Then, how could I pass up the chance to show off Barwani's sewing machine perfs, SG 23c, the 4 Anna orange-brown of 1927, again?

Centring is always an interesting point with these stamps.
And perhaps I could end this
tour de force of Barwani with an actual error, SG 28ac, the rather bizarre perf error on the 1929 ¼ Anna bright blue
