Unknown variant ireland Charles 1st farthing

Hello all, I recently bought a Charles the 1st farthing from Ireland, upon searching it here I was surprised about how many there were even some being made for England and not ireland

The seller listed it as an Irish farthing but I do not know, unfortunately as the item is yet to arrive for me i have been unable to find diameter and weight 

https://en.numista.com/catalogue/index.php?e=england&r=1+Farthing+-+Charles+I&st=147&cat=y&im1=&im2=&ru=&ie=&ca=3&no=&v=&a=&dg=&i=&b=&m=&f=&t=&t2=&w=&mt=&u=&g=&c=&wi=&sw=

The above link should show you all the English Charles I farthings (you may need to have all categories enabled on the catalogue).

Many of these featured a crowned harp on the reverse, so could be mistaken for Irish issues. And you're right - there are a lot of them!