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Electrum coins [ source ] First proposed by economist Alfred Marshall in the late 19th century as an alternative metallic standard to the gold, silver and bimetallic standards, symmetallism was widely debated at the time but never adopted. Marshall's idea amounted to fusing together fixed quantities of silver and gold in the same coin rather than striking separate gold and/or silver coins. Symmetallism is actually one of the world's oldest monetary standards. In the seventh century B.C., the kingdom of Lydia struck the first coins out of electrum , a naturally occurring mix of gold and silver. Electrum coins are captured in the above photo. While symmetallism is an archaic concept, it has at least some relevance to today's world. Modern currencies that are pegged to the dollar (like the Hong Kong dollar) act very much like currencies on a gold standard, the dollar filling in for the role of gold. A shift from a dollar peg to one involving a basket of other currencies amoun...

Imagine waking up in the morning and checking the hockey scores, news, the weather, and how much the central bank has adjusted the gold content of the dollar overnight. This is what a 21st century gold standard would look like. Central banks that have operated old fashioned gold standards don't modify the gold price. Rather, they maintain a gold window through which they redeem a constant amount of central bank notes and deposits with gold, say $1200 per ounce of gold, or equivalently $1 with 0.36 grains. And that price stays fixed forever. Because gold is a volatile commodity, linking a nation's unit of account to it can be hazardous. When a mine unexpectedly shuts down in some remote part of the world, the necessary price adjustments to accommodate the sudden shortage must be born by all those economies that use a gold-based unit of account in the form of deflation. Alternatively, if a new technology for mining gold is discovered, the reduction in the real price of gold is f...

Santiago skyline This post continues on the topic of the separation of the medium-of-exchange function of money from the unit-of-account function. My previous post discussed how the medieval monetary order was characterized by both a medley of circulating coins and one universal £/s/d unit of account. This post introduces a modern example of medium-unit divergence: the Chilean peso and Chile's Unidad de Fomento . I'll explain how the Chilean system works and end off by asking some questions about the macroeconomic implications of this separation, specifically what happens at the zero lower bound . Like most modern currencies, the peso is issued by the nation's central bank; the Banco Central de Chil e. Local banks offer peso-denominated chequing and savings accounts. Chileans use these pesos as the nation's medium-of-exchange. They pay their bills with pesos, settle rent with it, and buy food with it. The differences between Chile's monetary system and those of ot...