If your concern is that the vehicle is wearing a fancy number plate with an unusual font, this will have to be changed by you at the earliest, since installing high-security registration plates in Maharashtra is mandatory.
However, if your concern is that the vehicle is not selling for two months despite a special number on its plate, that shouldn't be much of a concern - not everyone desires special number/s; a particular number for one person might not have any relevance for another. So if you are getting a good deal, and you are convinced that the used car is ideal for you, go for it.
