1) Aggregator 2) Coin collector 3) Collector 4) Numismatologist 5) Quarter master 6) The change may do him good 1) Coin collector 2) Collector 3) Numismatologist 
[magazine] The Numismatist (formerly Numismatist) is a monthly publication by the American Numismatic Association. Its current editor is Barbara Gregory. The Numismatist contains articles written on such topics as coins, tokens, medals, paper money, and stock certificates. All members of the American Numismatic Association receive the publi...
• (n.) One skilled in numismatics; a numismatologist. • (n.) One skilled in numismatics; a numismatologist.
Coin collector.
Collector of historical coins and currencies.
A student and/or collector who is knowledgeable in numismatics.
A person knowledgeable in numismatics, with greater knowledge than a collector.
Collector of historical coins and currencies.
Nu·mis'ma·tist noun One skilled in numismatics; a numismatologist. 
[n] - a collector and student of money (and coins in particular)
numismatologist noun a collector and student of money (and coins in particular)
Coin collector.
a specialist in numismatics. · a person who collects numismatic items, esp. coins.
[SAT terms] a collector and student of money, especially coins