The first British Florin was issued in 1849, so it is unlikely that there would be a Half Florin coin minted any earlier.
There was never a British coin called a Half Florin. If one existed, a Half Florin would be One Shilling.
The only British 22 carat gold coins issued in 1899 were the Sovereign and the Half-Sovereign. The Florin was a silver coin from its introduction into the currency in 1848.
Please check your coin. The word "spade" referring to British coins is a reference to the "spade" shaped shield on the reverse of gold Guinea and Half-Guinea coins minted between 1787 and 1800. The Florin coin was not (re)introduced into the British currency until 1848.
The British Half Penny was no longer issued after 1984.
The British Half Penny was no longer issued after 1984.
The British didn't make a half dime.
There was no British Half-Sovereigns minted from 1927 to 1936 inclusive.
The last British Half-Farthing coin was issued in 1868.
The 1843 British half farthing, originally issued for use in Ceylon but eventually made legal tender in Great Britain as well, had a face value of 1/1920th of a British Pound. Were it still circulating today, at the current exchange rate (April 2009) of about GBP1.00=US$1.45, it would have a face value of about 1/12 of a US cent. The real question is the numismatic value of the coin (that is, its value to a collector), and that depends on the coin's condition. In Fine condition, it is worth about US$2.50; in Very Fine, about US$6.00; in Extremely Fine, about US$28.00; and in Uncirculated condition, about US$70.00.
You've got to be more specific. First, the usual definition of a florin would be the British coin worth 2 shillings (1/10th of a pound). Because of this, there would be no such thing as a "quarter of a florin" let alone "cents" which cents have never been used when referring to British currency. So a quarter of a florin would be half a shilling or sixpence. But sixpence coins would always say sixpence and never would say "a quarter of a florin" I'd look at your coins again and post a new question.
There were no British Half-Sovereign coins minted from 1938 to 1979 inclusive
There were no British Half-Sovereign coins minted from 1938 to 1979 inclusive.
There were no British Half-Sovereign coins minted from 1938 to 1979 inclusive