>>60939135
>>60939131
The fundamental problem with a bi-metallic standard is you can't have a fixed price ratio between two different commodities, if that price ratio differs ANYWHERE else in the world.

Imagine your country sets a 1:15 GSR, but another country sets a 1:16 GSR. That means 15 ounces in one country buys one oz of gold, but 16 oz in the second country buys one oz of gold. I would buy an ounce of gold in country one, sell it in country two and go back to country one with my 16 ounces of silver, buy another ounce of gold, rinse and repeat until I had drained all the gold from country one.

This is called arbitrage. You CAN have a bi-metalllic standard if:
1. your prices float in one of the metals.
2. if the coins have a "fiat" value significantly in excess of the metal content of the coin.

For example, the Soviets made counterfeit 1923 Mercury dimes and smuggled them into the USA. The alloy was a perfect match for the real Mercury dimes, but the silver content was worth much less than 10 cents at the time, so the Soviets made a profit. Ironically, those counterfeit dimes are worth a fortune to collectors today.