How much is one ryo?

The ryo was a historical Japanese currency unit used during the Edo period, roughly equivalent to about 1.5 grams of gold. Its value fluctuated over time and varied based on the economic context, but it is often estimated that one ryo could be worth around 1,000 to 3,000 yen in modern currency, depending on the specific period and market conditions. However, because it is no longer in circulation, its value is mostly of historical interest.