Transport is a big issue. The price of silver in 1550s Iceland, where there are no silver mines, was certainly going to be far higher than Joachimsthal where silver was mined and Joachimsthalers mined.
The Great Bullion Famine[1] and subsequent Price revolution[2] fueled by Spanish expropriation of New World gold and silver tell me that prices weren't so stable over the pre-20th century period.
Transport is a big issue. The price of silver in 1550s Iceland, where there are no silver mines, was certainly going to be far higher than Joachimsthal where silver was mined and Joachimsthalers mined.
The Great Bullion Famine[1] and subsequent Price revolution[2] fueled by Spanish expropriation of New World gold and silver tell me that prices weren't so stable over the pre-20th century period.
[1] https://en.wikipedia.org/wiki/Great_Bullion_Famine
[2] https://en.wikipedia.org/wiki/Price_revolution