Timurid: Timur or Tamerlane (771-807 AH/1370-1405), Silver Tanka (5.92 grams 27 mm), Mint of Urmi ارومی , struck AH 792-807, It is Album-2386 vf RARE Mint!
Obverse: Timur and Chaghatayid overlord Mahmud and 3 circle pattern flag of Timurid empire at center, Mint below.
Reverse: Kalima and the names of 4 orthodox caliphs around.