I need a little help with a few Woods Hibernia pieces......

Hello folks,
I picked up a few of these pieces and I'm having a hard time deciding whether they're farthings or half penny's.
These is a little difference in their diameters, but not enough to determine that one is one thing and the others are another thing.
My guess is that they're all half penny's. But I'm not sure.
Number 1 measures 27.2 millimeters, number 2 is 26.2 and number 3 is 25.1.
Thanks for looking and for your help.
0
Comments
Those are halfpennies.
Thank you for your help.
I guess it's just the size variance that had me confused.
I appreciate that !
They were struck without a collar so diameter will vary a bit.
@thebeav Cool coins!
I actually started collecting these by die variety once but they were mostly so similar I gave up on that. I still have a good selection of major type and date.