ARAB-BYZANTINE: Justin & Sophia type, late 7th century, AE follis (5.87g), Gerasa, "year 12 ", A-3509.2, ABQ-C9 (same dies), first two letters ΓE of mint name in Greek at right, without Arabic tayyib / capital M, NIKO below (Nikomedia), cross above, crude star above the date, trace of porosity, mainly on reverse, VF, RR. The light weight and spelling peculiarities of this type (e.g., ANO instead of ANNO) suggest a late issue, circa 690s to the early 700s.
Estimate: 500- 600 USD