In some stations, the signs at different places show different names:
Sakleshpur is supposed to the correct spelling.
I have seen signs of Hafizpet and Hafizpeta coexisting.
And in Chennai:
Washermanpet is listed in official sites. And the Hindi signs seem to agree.
Chromepet is the official name, which is logical as there is or was the Chrome Leather Factory nearby. But today all signs gave been changed:
More peculiar is the station which is listed as Dalhousi Road (which is wrong as the town and the Governor-General were spelt Dalhousie). And the station sign is more correct than the official listing:
Finally, the official name is Atari, but signs mainly show Attari:
To make things more confusing, the Punjab government has renamed the station Atari Shyam Singh in 2015, though it appears that the Centre has not approved of this .
Similarly, you will still see Allahabad and not Prayagraj. (There are also Prayag Jn and Prayag Ghat which are different). There are numerous photoshopped pictures of the new signs on the net, but no genuine pictures of the new signs where Prayagraj has replaced Allahabad.
(While on this topic, note the continued existence of IIT Madras, IIT Bombay and IIM Calcutta).
Tail piece: note the mismatch between Hindi and Bengali here: