The shilling is a unit of currency used in some current and former British Commonwealth countries. The word shilling comes from schilling, an accounting term that dates back to Anglo-Saxon times where it was deemed to be the value of a cow in Kent or a sheep elsewhere. The word is thought to derive from the base skell-, "to ring/resound" and the diminutive suffix -ing. 
The abbreviation for shilling is s, from the Latin solidus, the name of a Roman coin. Often it was informally represented by a slash, standing for a Long s: e.g., "1/6d" meaning 1 shilling and sixpence (often pronounced "one and six"); a price with no pence was written with a slash and a dash, e.g., "11/–". Quite often a triangle or (serif) apostrophe would be used to give a neater appearance, e.g., "1'6" and "11'-". In Africa it is often abbreviated sh.
In the United Kingdom, a shilling was a coin used from the reign of Henry VII until decimalisation in 1971. Before decimalisation, there were 20 shillings/pound and 12 pence/shilling, and thus 240 pence/pound. Two coins denominated in multiple shillings were also in circulation at this time. They were the florin, which adopted the value of 10 new pence (10p), and the crown, the highest denominated non-bullion UK coin in circulation at decimalisation (in practice, crowns were commemorative coins not used in everyday transactions). At decimalisation, the shilling was superseded by the new 5 pence piece, which initially was of identical size and weight and had the same value, and inherited the shilling's slang name of a bob.
In Ireland, the shilling was issued as scilling in Irish and was worth 1/20th of an Irish pound. The coin featured the bull on the obverse side. The original minting of the coin from 1928 until 1941 contained 75% silver; this Irish coin had a higher content than the equivalent British coin. The Irish shilling was finally withdrawn from circulation on January 1, 1993 as a smaller five pence coin was introduced.
Australian shillings, twenty of which made up one Australian pound, were first issued in 1910, with the Australian coat of arms on the reverse and King Edward VII on the face. The coat of arms design was retained through the reign of King George V until a new ram's head design was introduced for the coins of King George VI. This design continued until the last year of issue in 1963. In 1966 Australia's currency was decimalised and the shilling was replaced by a ten cent coin (Australian), where 10 shillings made up one Australian dollar.
The slang term for a shilling coin in Australia was "deener". The slang term for a shilling as currency unit was "bob", the same as in the United Kingdom.
The East African shilling was in use in the British colonies and protectorates of British Somaliland, Kenya, Tanganyika, Uganda and Zanzibar from 1920, when it replaced the rupee, until after those countries became independent, and in Tanzania after that country was formed by the merger of Tanganyika and Zanzibar in 1964. Upon independence in 1960, the East African shilling in the Northern Region of Somalia (former British Somaliland) and the Somali Somalo in the Southern Region (former Italian Somaliland) were replaced by the Somali Shilling. In 1966 the East African Monetary Union broke up, and the member countries replaced their currencies with the Kenyan shilling, the Ugandan shilling and the Tanzanian shilling respectively. Though all these currencies have different values at present, there are plans to reintroduce the East African shilling as a new common currency by 2009.
The Austrian schilling was the currency of Austria between 1924 and 1938 and again between 1945 and 2002. It was replaced by the euro at a fixed parity of €1 = 13.7603 Schilling. The Schilling was divided into 100 Groschen.
Shillings were also issued in New Zealand before decimalisation in the 1960s, in the Scandinavian countries (skilling) until the Scandinavian Monetary Union of 1873, and in the city of Hamburg, Germany.
The Sol (later the sou), both also derived from the Roman solidus, were the equivalent coins in France, while the (nuevo) sol (PEN) remains the currency of Peru. As in France, the Peruvian sol was originally named after the Roman solidus, but the name of the Peruvian currency is now much more closely linked to the Spanish word for the sun (sol). This helps explain the name of its temporary replacement, the inti, named for the Incan sun god.
Elsewhere in the former British Empire, forms of the word shilling remain in informal use. In Vanuatu and Solomon Islands, selen is used in Bislama and Pijin to mean "money"; in Malaysia, syiling (pronounced like shilling) means "coin". In Egypt and Jordan the shillin (Arabic: شلن) is equal to 1/20th of the Egyptian pound or the Jordanian dinar.
In the United States during colonial times, British money was used, and references to shillings are often seen in early American literature. Colonial shillings, such as the 1652 pine-tree shilling, were made in Massachusetts when the Puritans settled in America. After the United States adopted the dollar as its unit of currency and accepted the gold standard, one British shilling was worth 24 U.S. cents. Due to ongoing shortages of U.S. coins in some regions, shillings continued to circulate well into the 1800s, for example being mentioned as the standard monetary unit throughout the autobiography of Solomon Northup, a free African-American of New York who was kidnapped and sold into slavery in Louisiana.
SHILLING, an English silver coin of the value of twelve pence. The origin of the word is somewhat obscure. There was an AngloSaxon coin termed stilling, or scylling, worth about fivepence, which is said to be derived from a Teutonic root, skil, to divide, +ling on the analogy of farthing. The silver shilling was first struck in 1504, in the reign of Henry VII. In Charles II.'s reign shillings were first issued with milled edges. In George IV.'s reign were issued the so-called "lion shillings," bearing the royal crest, a crowned lion on a crown, a design reverted to in the coinage of Edward VII. A shilling is token money merely, it is nominally in value the one-twentieth of a pound, but one troy pound of silver is coined into sixty-six shillings, the standard weight of each shilling being 87.27 grains.