Numismatist (noun)

A person who studies or collects coins, medals, and other forms of currency.

Origin:

Derived from the greek word "nomisma" meaning "coin" and the suffix "-ist" indicating a person who is an expert in a particular field.

Examples:

1. My grandfather is a numismatist and he collects coins from all over the world.
2. Numismatist are always on the lookout for rare and valuable coins.
3. The numismatist at the museum helped me identify the coin I found.
4. Numismatist can appraise the value of a coin based on its condition, rarity, and historical significance.
5. I visited the numismatist to get my coin collection appraised.