Sogdian legend around square hole nny'βy't smyδ'nč, which can be translated as 'Nanaiabiat Samidanian', Samitan being the town's name, Nanaiabiat the ruler / Tamgha each side of square hole. 20mm, 1.52 g. Fedorov pl.24, #1-6. SKU T1684-49296
The identical tamghas are in the form of a semi-circle on a pedestal; small annulet in semi-circle.