Very, very Uncertain

This turned up in my Robinson trap that I run daily in my garden in Newport Pagnell.  It caught my eye because of the distinctive markings and it was next to an Uncertain/Rustic.  I have spent far too long on it and reckon it is another Uncertain/Rustic but certainly not one I have seen before.  Does it turn up like this elsewhere or am I/have I been missing a trick?