Hello,
There is a discussion on Commons about the copyright law of India,
precisely whether pictures taken prior 1957 should apply the new law
or the old law. I believe it is the later, but Carl Lindberg, says
there is a uncertainty.
Could WM India ask a lawyer for a confirmation.
https://commons.wikimedia.org/wiki/Template_talk:PD-India#Before_1958
Regards,
Yann