I found 1961 mule

I have found in my coins a mule error not sure what to do at this moment if it’s worth sending it in to get graded. also how many of these exact mule errors are cataloged & registered??  Any insight or advice would be greatly appreciated thank you in advance!

That one eludes me so far.

Aidan.

Nobody can make a judgement or offer an opinion without seeing it.

 I also have one 

https://en.numista.com/forum/topic96500.html#p807431 

from a topic six years ago. 

 As mentioned would need to see pictures - 

firstly for the condition, and to make sure it is the ‘mule’ coin. 

@ZacUK , I have not managed to find one - but if you do find one you want to offload, please let me know.

Aidan.

 I do sometimes see them listed, and also sometimes the seller is mistaken as it 

is not the mule coin (I know what to look for). So if I see any I will send you a link by PM.  :)