The guinea was used in a similar way in Australia until that country converted to decimal currency in 1966, after which it became worth A$2.10.

What is a Ginny in English money?

Word forms: guineas

A guinea is an old British unit of money that was worth £1.05. Guineas are still sometimes used, for example in auctions.

How much is a guinea in today's money?

A guinea was worth £1,1s (one pound and one shilling). This is the same as £1.05 in modern money.