Core terminology and grading concepts across popular collecting hobbies such as coins, stamps, and trading cards, one term per card.
35 cards · basic cards · AI-written, checked twice. Edit anything.
- Numismatics
- The hobby of collecting and studying coins
- Philately
- The hobby of collecting and studying postage stamps
- Numismatist
- A person who collects or studies coins
- Philatelist
- A person who collects or studies stamps
- Mint condition
- A collectible in perfect or near-perfect state with no visible wear or damage
- Circulated (coin)
- A coin that has passed through regular everyday use in commerce
- Uncirculated (coin)
- A coin that was never used in everyday commerce
- Obverse
- The front or face side of a coin
- Reverse
- The back side of a coin
- Reeding
- Fine lines or ridges on the edge of a coin, originally to prevent shaving off precious metal
- Proof (coin)
- A coin specially struck with extra pressure for collectors, not intended for circulation
- Toning
- Color change that develops on a coin surface from oxidation and exposure over time
- Strike (coin)
- The quality and sharpness of the image stamped onto the coin blank during minting
- Key date
- A coin with a date and mintmark combination that is difficult to find or rare
- Perforation
- The small holes cut between stamps on a sheet to allow easy separation