Patina
Surface film or discolouration caused by oxidation sometimes found on older silver, copper or bronze coins. A nice patina can add to the value of the coin considerably.
Pattern
Coin struck from official dies but not intended for circulation, such as for demonstration or specimen test purposes only.
PGCS
Professional Coin Grading Service, a leading third-party coin grading service located in USA.
Piedfort
A coin struck on a blank that is thicker than normal, usually twice as thick. Example: A Piedfort £2 is a £2 coin that is twice as thick. Increases the weight of high value metal coins like silver.
Planchet
Known in the UK as a Blank, this is the (usually) circlular metal disk ready to be used to make a coin.
Pleidiol Wyf i’m Gwlad
Meaning: 'True am I to my country’, from the Welsh National Anthem.
Portrait
Engraving of a person, especially one depicting only the face or head and shoulders. Sometimes called a bust.
Pro Tanto Quid Retribuamus
Meaning: 'What shall we give in return for so much.' The Motto of Belfast
Proof
Coins specially struck for collectors using polished dies and blanks, giving a mirror finish and raised areas which may be frosted in appearance.
Proof Set
A set of proof coins sold by the mint, usually connected by a date or theme, like a 2001 sovereign set. See the Royal Mint Proof Sets Section.
List items on:
 | Royal Mint - Year of Birth Proof Coin Set Birthday/Anniversary Gift 1977-1999 £ 14.01 |
 | The Royal Mint 2020 United Kingdom Premium Proof Coin Set, Boxed with COA £ 131.69 |
 | ROYAL MINT FLAT DELUXE PROOF SETS 2000 TO 2022 CHOICE OF DATE £ 44.99 |
 | 1927 George V Original Proof Set Hard Case, No Coins £ 60.00 |
 | 2005 Nelson Trafalgar Piedfort Silver Proof 2 - Coin Set £5 Crown COA Boxed £ 161.90 |
 | 1970 UK PROOF Coins - Last Pre-Decimal Halfpenny to Half Crown - Choose Coins £ 24.99 |
 | 2026 Annual Base Proof Set 13 Coins Royal Mint Pack with CoA £ 199.00 |
 | 1976 Montreal Olympics silver proof set. coins minted by the Royal Canadian Mint £ 260.70 |
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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.