ARAB-BYZANTINE: Standing Emperor, ca. 640s-660s, AE square fals (3.69g), NM, A-3504, Foss, p.32, emperor standing, holding 2 crosses, traces of EN TOTO NIKA around / cursive m, ANA left, traces of NEO right, blundered text below, derived from Class 1 of Constans II (Grierson-367), extremely rare on square flan, VF, RRR.
Estimate: 250- 350 USD