Watch List notes:

ISLAMIC, Ottoman Empire. Mahmud II. AH 1223-1255 / AD 1808-1839. AV Cedid Rumî Çifte Altın (28mm, 4.31 g, 12h). Possible Pattern issue with Indication of Fineness (890 in Eastern Arabic numerals) on Obverse. Qustantiniya (Constantinople) mint. Dually dated AH 1223 and RY 10 (AD 1818). Cf. Sultan 2974; cf. Pere 758; cf. KM 614; cf. Friedberg 8 (all refs for type without mention of fineness). UNC.

From the collection of Dr. Lawrence A. Adams, purchased from M. Louis Teller, February 1982.