BURJI MAMLUK: Shaykh, 1412-1421, AV dinar (13.45g), al-Iskandariya, AH82(3), A-987, B-684, flipped over and struck a second time, VF, RR. Same dies as Balog-684, which has clear mint name al-Iskandariya (only partly visible on this piece) and clear date.
Estimate: 900-1100 USD