Indian Penal Code, 1860
Section 248
repealedAltering appearance of coin with intent that it shall pass as coin of different description
Whoever performs on any coin any operation which alters the appearance of that coin, with the intention that the said coin shall pass as a coin of a different description, shall be punished with imprisonment of either description for a term which may extend to three years, and shall also be liable to fine.
Why this exists
This section targets a specific trick: altering a genuine coin's look — for instance, its size, colour, or markings — so that people mistake it for a different, often more valuable, denomination. Unlike sections dealing with counterfeiting from scratch, this covers taking a real coin and disguising it as something it isn't, defrauding whoever later accepts it believing it to be that other type of coin.