Charles I Halfgroat identification help

Hi all, 

I’ve spent most of today trying to identify the version of my Charles I halfgroat, looking in the Coins of England book and searching the internet, I believe I may have found it but would like help in confirming if possible

i believe it is Spink 2831 ?

Any help much appreciated.

thanks

Anthony

N#52429

Above is the Numista catalogue page, you can compare yourself.