UK 2p Wrong planchet

[autocoupler]

Not sure if I posted this before. A 2p on cupro nickel planchet.

[Triggersmob]

Were you able to work out what coin the planchet was for, by weight and diameter?

[autocoupler]

Yes, Steve. I acquired the coin back around 2008-2009, a while ago now. The coin weighed 5.6g which is close to that of a 5P planchet at 5.65g. The diameter was 24mm-25mm. I have seen other 2P coins on the net where they were minted on foreign planchets, maybe South African, but well centered. I remember seeing another well centered one at VP coins a few years back when they still had a shop front. 

[gweidion]

Not well versed on British coinage. What was the planchet supposed to be?