Enter new coin information

I requested to identify a coin and I got the answer, thanks again. The respected member stated that my coin is a 1/2 Rupee Shah Alam II, Chandor mint coin. This type of coin is not listed on "Numista", kindly confirm about it.

If this type is not listed; can I add it on Numista? I do not know many other details of the said coin. I have only photographs uploaded in the "Coin identifications and valuations" section titled "Indian silver". Can someone help to enter the details?

Thanking in anticipation.