exchange
為替 — Institutions
Exchanging one currency for another; also the rate of it.
George III Sovereign 1817 (The Metropolitan Museum of Art)1817
Kingdom of the Two Sicilies, Ferdinand II, Piastra (120 Grana), 18341834
2 euro (Portuguese national side)From 2002
In the age of metallic currency, foreign exchange was ultimately a comparison of "which silver is heavier". With the advent of fiat currency, there is no intrinsic content to compare, and credit itself has come to be priced.