The proper term for that person would be known as a numismatist. There is no difference in titles between an American collector,a Canadian collector, or a European collector.
Gold Farmer: A person who collects in-game currency in a Massively Multiplayer Online Role-Playing Games (MMORPG) for the purpose of selling it to other players for real world currency.
A person who collects beetles is a coleopterist.
A person who collects things can be called a collector. If the collecting is thought to be excessive, such a person might also be called a packrat, or a hoarder.
A person who collects shells is known as a conchologist.
The answer depends on the currency to which the question refers. The coinage for US, for example, is different to that for the Euro zone. There are many other countries that also use cents.
Phillumeny is the hobby of collecting different match-related items: matchboxes, matchbox labels, matchbooks, matchcovers, matchsafes, etc. The collector is called a phillumenist.Arthur J. Dent is the name of a person who collects mathbooks.
a person who collects stamps
Numismatist
hemipterologist
A person who collects nests or eggs and studies them is called an oologist.
A geologist is a person who studies rocks and rock formations. A rock collector or a rock hound is a person who collects rocks for fun.
A person who visits and travels to different countries can be referred to as a traveler or a tourist.