Not necessary Mule coins (Republic India)

There some mule coins mint every year. So, I requested not to register these coins in Numista catalogue, because all mule coins are eligible for the same category.
Mule: https://en.numista.com/catalogue/pieces58252.html
Original: https://en.numista.com/catalogue/pieces25172.html

If the design pair is not proper then it is a mule.

Mule coins deserve to be listed alone.

The Bahama Islands N.D. (1967) 5 Cents obverse muled with the New Zealand 2 Cents reverse is listed alone - as it was found in circulation in New Zealand shortly after the 10th. of July 1967 (Decimal Currency Day).

Aidan.

Is there any mule coin cataloging system separately. I have some coins.

Most mules have their own Krause number and their own page.