Yes, a guinea is 21 shillings = 1 pound 1 shilling = 1.05 pounds.

I assume punt is just how pound sounds in Irish Gaelic.

Here of course we have the much-ailing rupiah (often just called the rup (with an oo sound)). I assume the name is connected to the Indian rupee. A long, long, long time ago the rupiah was divisible into 100 sen. The one hundred rupiah coin is often referred to as perak, literally silver. So Rp. 500 would be called 5 perak. These days of course it's just a tacky plastic token.

Bingley

Bingley