The Guinea coin was a legal currency in Great Britain that was minted in the Kingdom of England between 1663 to 1813. Australia uses the metric system for most quantities: The modern form of the metric system is the International System of Units (SI). A Guinea of course can be worth far more that just its metal value. 2004 by EH.NET. A 1 coin was called a Sovereign and was made of gold. The name stuck to later coins of the same gold value, minted from different stock. were smaller coins than pennies: there were half-pennies, farthings (one-quarter penny), and even half-farthings, all Your email address will not be published. a convenient comparison date. 25 guineas would then be the equivalent of 25 pounds and 25 shillings, or 26 pounds 5 shillings. Guineas are still sometimes used, for example in auctions. How Much Is A Guinea Worth In Todays Money? page 1 of Ledger C1047, 01 January 1851, 1 1s Inflation data is provided by governments and international institutions on a monthly basis. The Thousand Guineas is a mile feature held at Caulfield Racecourse in early to mid-October every Melbourne Spring Racing Carnival for three-year-old fillies and is worth a lucrative $1 million in prize money. How much is a guinea worth in today's money? The ten-shilling note was the smallest denomination note ever issued by the Bank of England. century later the denomination was discontinued. This is the same as 1.05 in modern money. metals caused the coins to be revalued many times.