Pound Scots

The pound Scots (Modern Scots: Pund Scots, Middle Scots: Pund Scottis) was the unit of currency in the Kingdom of Scotland before the kingdom unified with the Kingdom of England in 1707. It was introduced by David I, in the 12th century, on the model of English and French money, divided into 20 shillings, each of 12 pence. The Scottish currency was later debased relative to sterling and, by the time of James III, the pound sterling was valued at four pounds Scots.