I think the problem is Paddy that without the broken/smaller tooth above the colon , you would be had put to convince a buyer that its a Recessed ear type . Below is my coin which has a very slight damaged colon tooth , also another picture of a worn coin which is clearly a recessed ear, but you can see that the tooth is intact but very slightly smaller than the other teeth.
If I were you I think I would try to find one with one of those faults on the colon tooth .