Also, I've had this in my collection for some time now…
This coin is at least 15-20 years old and is clearly fake. The engraver's initials are PM, the denticles are far too long, the lettering appears to be very slightly smaller and the metal is redder, but I can't see any other differences. Not sure where this should go in the Exonumia catalogue, if at all - it's clearly not produced to deceive people, but more of a curiosity.
The example below is from the catalogue page for 1 Penny - George V smaller portrait (1928-36)
