Huge AR 2 1/2 Piastres (yuzluk), Selim III (1789-1807), Istambul mint, Ottoman Empire. Dated to frozen accession year 1203 AH (1789), regnal year 2 (=1790). 45mm, 31.90 grams. KM 507; Dav. #334.

Lovely huge silver coin.