ARAB-BYZANTINE: Standing emperor, ca. 650s-670s, AE square fals (5.17g), A-3504, imitating Byzantine follis, probably of Constans (641-668): standing figure holding long cross and globus cruciger, some scattered Greek letters // tall cursive "m", some Greek letters left & right; peculiar type, unlike any we've seen before, attractive patination, VF-EF, RRR.
Estimate: 150-200 USD