Glossary of Numismatic Terms starting with D

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D
Abbreviation for Denarius, the 'd' in £sd (pounds-shilling-pence), for the predecimal British penny.
Debasement
The lowering of the intrinsic value of a coin, usually by reducing the gold or silver content. Monarchs and governments do it to save money (at the peoples expense).
Decimalisation
Moving a currency onto the decimal system (units of 10). The UK decimalised in 1971 so that 1 pound = 100 pence.
Declaration Type
Coins of Charles I that carried the (abbreviated) motto 'Religio Protestantium Leges Angliae, Libertas Parliamenti' thus declaring 'The religion of the Protestants, the laws of England, the liberty of Parliament.
Decus et Tutamen
Latin for 'An ornament and a safeguard'. From Virgil’s Aeneid
Dei Gratia
Latin for 'By the Grace of God'. Often abbreviated such as D G Regina (By the Grace of God, Queen) or D G Rex for a King.
Denarius
The standard Roman silver coin. Equivalent to 10 asses.
Denomination
The face value of a coin, e.g. 'One Pound' or '10 cents'.
Designer
Artist or creator of the design of the coin.
Diademed
Describes the head on the coin is wearing a crown or headband as an sign of Royalty.
Die
Metal tool engraved with the design of the coin used to stamp the blank.
Dime
American 10 cent coin.
Domine Dirige Nos
Meaning: 'Lord direct us.' The Motto of London.
Double Eagle
American $20 gold coin (1850-1933)
Double Florin
British coin denominated at 4 shilling (4/-) minted during the reign of Queen Victoria. The were only made from 1887 until 1890, making it one of the shortest lived coins in British history. It is a large coin with a 36mm diameter, just 2mm smaller than a Crown. See Double Florins.
Double Strike
A coin that is struck twice leaving a double impression as a defect.
Dupondius
A brass Roman two-as coin.

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UK On eBay UK:
1887 Double Florin - Victoria British Silver Coin - Very Nice
1887 Double Florin - Victoria British Silver Coin - Very Nice
£ 55.00
1888 DOUBLE FLORIN QUEEN VICTORIA BEAUTIFUL SILVER COLLECTIBLE COIN    #WT39489
1888 DOUBLE FLORIN QUEEN VICTORIA BEAUTIFUL SILVER COLLECTIBLE COIN #WT39489
£ 45.00
British Victorian Silver Double Florin Coin 1890 EF Grade Lustrous Toned Lovely
British Victorian Silver Double Florin Coin 1890 EF Grade Lustrous Toned Lovely
£ 69.95
VICTORIA SOLID SILVER DOUBLE FLORIN ( 4/- )  1889
VICTORIA SOLID SILVER DOUBLE FLORIN ( 4/- ) 1889
£ 29.99
1887 retro Double Florin. Souvenir Gap Filler. Same size/weight as original.
1887 retro Double Florin. Souvenir Gap Filler. Same size/weight as original.
£ 6.50
QUEEN VICTORIA SILVER DOUBLE FLORIN 1887 to 1890 - CHOOSE YOUR YEAR!
QUEEN VICTORIA SILVER DOUBLE FLORIN 1887 to 1890 - CHOOSE YOUR YEAR!
£ 44.99
1888 Double Florin - Victoria British Silver Coin
1888 Double Florin - Victoria British Silver Coin
£ 120.00
1887 Queen Victoria Silver Double Florin Coin - Great Britain
1887 Queen Victoria Silver Double Florin Coin - Great Britain
£ 44.95

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Glossary of Numismatic Terms

Numismatics is the study of coin collecting and it also has its own language with many words and terms. Our Glossary of Numismatic Terms give the explanation to some of these coin collecting words. To contribute terms please email them to glossary@coinparade.co.uk.