Dirhemi

The Abbasid dirham was the backbone of medieval Islamic commerce, circulating from Iberia to Central Asia along trade routes that made it the closest equivalent the 8th–10th century world had to a reserve currency. Hoards of Abbasid dirhams turn up regularly across Scandinavia — Viking traders acquired them in such quantities that Arab silver constitutes the majority of early medieval coin finds in Sweden and the Baltic states.

At 2.9g, this example falls slightly below the canonical 2.97g mithqal standard, a common variation across provincial mints where weight control was inconsistent.