Above block of 4 is a facismile/copy/counterfeit stamp.!!!
So keep in mind what latest printers can do (along with rubber stamps) when you buy following items Mint or even USED on FDC or postally used.
1) 10 Rupees 1948 Gandhi stamps
2) 1 1/2, 3 1/2 and 12 Annas 1948 Gandhi stamps
3) SERVICE overprint Gandhi 1948 stamps
4) Imperf Gandhi stamps from Niger, Gabon, Cameroun, and all others Gandhi imperf stamps. (it's easy as no cutting required.!!)
5) SKY is the LIMIT.!!
THIS FAKE STAMPS MIGHT COME ON FDC OR USED COVERS SO BEWARE!!!!!!!!!
Following are some screenshot from delcampe where it is sold as facsimile(copy/forgery/fake)
SO BEWARE BEFORE YOU BUY ANY 1948 used stamps from India or F.D.C with India stamps or used covers with India stamps or any other philatelic ITEMS with stamps from India.!!
Gandhi stamps club