1831 AD., Mahmud II, Turkey, Constantinople mint, 20 Para, KM 588.

Turkey, Ottoman Empire, Mahmud II (AH 1223-55 / 1808-39 AD.), Qustantiniya mint (Constantinople, Istanbul), 8th issue, dated accession year AH 1223 + regnal year 23 = 1831 AD.,
20 Para (21,5 mm / 1,25 g), billon 0.220 silver,
Obv.: tughra (or signature of the sultan), within 3/4 chain wreath, all in a second wreath.
Rev.: ٢٣ / ١٢٢٣ , Arab text, regnal year, mint, value and accession year within 3/4 chain wreath, all in a second wreath.
KM 588 .