Wadō Kaichin

The Wadō Kaichin, issued in 708, was the first Japanese coin to feature an inscription in the local script, moving away from direct copies of Chinese cash coins.

This bronze piece, roughly the size of a modern quarter, bears "Wadō" on one side—marking the era name—and a simple pattern on the other, possibly evoking a flower or grain. Struck during Empress Genmei's reign, it signaled Japan's early efforts at monetary standardization. We know it was cast using copper, but sources vary; some suggest imports from Korea, others domestic finds.

Exact mintage figures are lost, likely destroyed in later fires or wars. Designs evolved quickly, with variants showing wear from immediate circulation.

After thirty years, I've seen enthusiasts swear these coins bring good luck, which is about as reliable as flipping one for a decision.