Watch List notes:

ARAB-BYZANTINE: Standing Emperor, ca. 650s, AE square fals (3.82g), "NKIO", A-3504, Foss, p.32, "emperor" holding 2 long crosses, retrograde E left, right character off flan / cross above cursive m, symbols left & right, mint name below, Fine to VF, RR. A very similar piece, struck on a more-or-less round flan, appeared in our Auction 19 (Lot 180), but it is extremely rare on a square planchet.

Estimate: 180- 220 USD