Coins and money
Not only were there many denominations of coin, but the values of the coins changed as their compostion, and the value of the metal they were made with, changed.
Coins were not just tokens, as they are today; they were worth the value of the metal from which they were made.Thus when the coinage was "debased"--the amount of gold or silver reduced--the value of the coin itself declined. Click here for a list* of Elizabethan coins.
In addition, many businesses issued their own tokens for small amounts (especially halfpennies and farthings). Made of brass, lead, even leather, tokens were redeemed by the merchant for goods, but were not universally exchangeable.
The coin illustrated here is an "angel," a coin worth 6 shillings and eight pence (one third of a pound)--often punned* on in plays of the period.
Loans, usury, and interest
In 1571 a law was passed allowing the payment of up to 10% interest on loans. The effect of the law was actually to reduce interest rates; by making interest legal, the black market rates that prevailed earlier-- which were much higher--became unnecessary.
As the age became more dependent on money and capital, credit and interest-bearing loans became more frequent. Antonio, in The Merchant of Venice, would have been very much the exception in Shakespeare's England, lending out money gratis, and thus bringing down the rate of "usance" in Venice (see 1.3.41-42).
Footnotes
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The value of the coins
Sovereign gold 13 1/3 to 30 shillings Ryal (royal) gold 15 to 33 shillings Pound gold 20 shillings Angel gold 10 to 11 shillings Noble gold 6 2/3 to 10 shillings (Ducat) gold 6 2/3 shillings Crown {gold or 5 shillings Unite {silver 20-22 shillings Shilling silver 12 pennies Sixpence (Also known as a "tester") silver 6 pennies Groat silver 4 pennies Penny {silver or Halfpenny {brass Farthing brass 1/4 penny -
Punning
Benedick manages to pun on two coins as he catalogues the qualities of the ideal woman he just might accept as wife: she must be "noble, or not I for an angel" (Much Ado 2.3.31-32).