Lydia’s geography meant electrum, an alloy of gold and silver, was its most plentiful naturally-occurring metal. Its natural gold-to-silver proportions varied and could be easily diluted with refined silver . Two hoards of 30 coins from Samos shows that gold percentages varied from 84%-46%. In order to determine its value, electrum had to be tested visually via its streaks on a touchstone, a cumbersome procedure for frequent transactions and small pieces . By predetermining a piece’s gold content and striking it with a type that signified its value, issuing authorities solved the difficulties of trading in electrum. As a result, coinage facilitated the use of electrum in transactions, the reason frequently attributed to its invention . However, the transfer of valuation from the metal itself to an issuing authority created an incentive to overvalue coins: the royal Lydian lion-head electrum coins were officially valued at average natural electrum levels, yet their actual metal content had been artificially diluted to create a 15-20% profit for the state . Though electrum coins made each trade faster and less cumbersome, it also created arbitrage opportunities. This feature of early electrum coins undermine the idea that coins were ‘intelligently designed’ to solve the difficulties in trade. While coinage may have facilitated exchange, it also threatened to undermine its own purpose as people
Lydia’s geography meant electrum, an alloy of gold and silver, was its most plentiful naturally-occurring metal. Its natural gold-to-silver proportions varied and could be easily diluted with refined silver . Two hoards of 30 coins from Samos shows that gold percentages varied from 84%-46%. In order to determine its value, electrum had to be tested visually via its streaks on a touchstone, a cumbersome procedure for frequent transactions and small pieces . By predetermining a piece’s gold content and striking it with a type that signified its value, issuing authorities solved the difficulties of trading in electrum. As a result, coinage facilitated the use of electrum in transactions, the reason frequently attributed to its invention . However, the transfer of valuation from the metal itself to an issuing authority created an incentive to overvalue coins: the royal Lydian lion-head electrum coins were officially valued at average natural electrum levels, yet their actual metal content had been artificially diluted to create a 15-20% profit for the state . Though electrum coins made each trade faster and less cumbersome, it also created arbitrage opportunities. This feature of early electrum coins undermine the idea that coins were ‘intelligently designed’ to solve the difficulties in trade. While coinage may have facilitated exchange, it also threatened to undermine its own purpose as people