That answered my question, too.
The first time I heard of the punt was when I watched “Derry Girls”. The family was traveling from Derry into the ROI, and the mom lost her “punt purse”.
I didn’t think enough about it to ask Google exactly what a punt was...it was clear enough that it was a monetary unit, so I let it go at that.
The official term in English was "Irish Pound" - it was often referred to as "the punt" in much the same was other Irish terms are used in English in Ireland, but the various series of notes that had the denomination written out in words used "pound" in English" and "punt" in Irish.