Coin collecting, or the study of currency. Coins may be collected for scholarly or historical purposes, such as to gain a deeper insight into past cultures, for financial profit, or purely as a hobby. Coins derive their perceived value not just from their actual currency value, but also from their age, rarity, and other factors. The American Numismatic Association was founded in 1891, with the goal of educating people about the study of numismatics, and now has over 33,000 members.