BURJI MAMLUK: 'Uthman, 1453, AV ashrafi (3.02g), al-Qahira, ND, A-1010, Balog 755, cited as al-mansur abu'l-sa'adat 'uthman, VF to EF, RRR, ex Gamal Amer Collection, ex Morton & Eden Auction, 7 November 2013, Lot 641. No example of this type is recorded on CoinArchives, and only one example of 'Uthman's alternative type (the name 'Uthman in a central circle) is cited.
Estimate: USD 1800 - 2400