A standard coin typically has two main surfaces: the obverse and the reverse. The obverse is the side that usually features a prominent design, such as a portrait or image that represents the coin’s issuing authority. The reverse, on the other hand, often includes a different design, which may depict symbols or values related to the coin’s purpose.
Additionally, coins may have a rim or edge, which can also be considered a surface. This edge can sometimes contain engravings, such as the coin’s denomination or mint marks. Therefore, if you also count the edge, you could say that a standard coin has three surfaces: the obverse, the reverse, and the edge.