Prices vary between threepence and sixpence per hundred lines. The usual choice was a silver threepence or a sixpence. The books were issued in two sizes costing threepence and sixpence each. Crowns, Half-crowns, Florins, Shillings, Sixpences, and threepence. The price of leeches varied between one penny and threepence halfpenny each. In 1644 the Exeter mint produced a fairly scarce threepence. A toll of threepence return for adults and one penny for children was charged. Mervyn only has one pound, two shillings and threepence in his pocket. A seamstress working at home, for instance, earned about threepence (1.3p) per day. The first issue ran to 2750 copies, and was sold for threepence. Following decimalisation, the brass threepence ceased to be legal tender after 31 August 1971. The copy rate remained at threepence until 1955 when it was abolished. The threepence was introduced in 1845 to "afford additional convenience for the purpose of change". The values were threepence (then first-class post); seven pence halfpenny; and ninepence.