I have a half rupee from 1946 which bares a Diamond Mint Mark. The only mint mark listed here is a dot. https://en.numista.com/catalogue/pieces8239.html
I have two of these and they are both Diamond mint marks but the years and mint marks have been verified, I would need some help to change this.
Can this be switched or added as additional? Even the existing catalog picture is a Diamond mint mark.
This is one of my coins:

Thanks all
Dan

