This wasn't a first for the region. For reasons unknown, the Indore State Post Office - at the time confined to carrying Government mail - in the early 1930s ordered some of its stamps from the printers (Perkins, Bacon in London) to be sent imperforate, although the normal stamps were perforated. Here is an example of the 2 Anna of the set imperf:

Presumably the powers that were thought that government employees could just use scissors, and save the cost of perforating. In any case, the imperforates
mint aren't so very hard to find

but properly used are rather scarce.