NGC NGC World Coins & Foreign Coinage 2 — Questions and Answers
Question 1: In NGC's world coin grading system, what does 'UNC Details' on a label mean?
- The coin is uncirculated and fully detailed
- The coin appears uncirculated but has a problem such as cleaning, environmental damage, or alteration (Correct answer)
- The coin has all its original details intact
- The coin was struck with extra detail dies
Correct answer: The coin appears uncirculated but has a problem such as cleaning, environmental damage, or alteration
NGC uses 'Details' designations when a coin has a problem that prevents it from receiving a straight numeric grade, even if it shows no circulation wear.
Question 2: Which of these is a key factor NGC considers when grading hammered coins from medieval Europe?
- Presence of reeded edge
- Centering, planchet quality, and sharpness of the design, since uniformity was not possible in hand production (Correct answer)
- Exact diameter conforming to published standards
- Die alignment within 5 degrees
Correct answer: Centering, planchet quality, and sharpness of the design, since uniformity was not possible in hand production
For hammered coins, NGC focuses on centering, planchet quality, and design sharpness since hand-striking methods made exact uniformity impossible.
Question 3: What is a 'trade dollar' in the context of world coinage?
- Any coin accepted as legal tender internationally
- A coin specially designed and issued to facilitate commerce in foreign markets (Correct answer)
- A dollar coin traded at numismatic conventions
- A coin with a face value of one trade unit
Correct answer: A coin specially designed and issued to facilitate commerce in foreign markets
Trade dollars were coins specifically designed by issuing nations for use in foreign trade, notably in Asia, where merchants valued them for their silver content.
Question 4: When evaluating a world coin for possible counterfeiting, NGC experts pay particular attention to:
- The color of the coin under UV light only
- Weight, diameter, edge characteristics, die details, and metal composition compared to genuine specimens (Correct answer)
- The language on the coin's inscription
- Whether the coin has a certificate of authenticity from the issuing country
Correct answer: Weight, diameter, edge characteristics, die details, and metal composition compared to genuine specimens
NGC's authentication process for world coins involves examining weight, dimensions, edge, die details, and metal composition and comparing them to known genuine specimens.
Question 5: What is the significance of a 'privy mark' on a world coin?
- A mark indicating the coin was privately minted
- A small symbol added by the mint to indicate the die-cutter, mint official, or special edition (Correct answer)
- A stamp applied by a coin dealer after purchase
- A mark indicating the coin is restricted from export
Correct answer: A small symbol added by the mint to indicate the die-cutter, mint official, or special edition
Privy marks are small symbols added by mints to identify the responsible die engraver, assayer, or to denote a special issue or limited edition.
Question 6: NGC's 'Top Pop' designation for world coins refers to:
- The highest certified grade for a particular coin in NGC's population report (Correct answer)
- A marketing program for popular world coin series
- Coins graded MS-70 regardless of type
- The first coin of a series to be certified by NGC
Correct answer: The highest certified grade for a particular coin in NGC's population report
A 'Top Pop' coin is the finest known example of a particular issue according to NGC's census, meaning no coin of that type has been certified higher.
NGC NGC World Coins & Foreign Coinage 2
In NGC's world coin grading system, what does 'UNC Details' on a label mean?