Bengal Sultan, Ghiyath al-din Bahadur joint issue with Muhammad bin Tughlaq, Sultan of Delhi, Silver Tanka, 10.86 gms, Hadrat Sunargaon Mint, Obv. Darb bi -Amr al-Wathiqq Billah Muhammad bin Tughlaq shah, Rev. al -Sultan al-Mu'azzam Ghiyath al-Dunya wa al-Din Abu al-Muzaffar Bahadur Shah al-Sultan bin al –Sultan, G&G # B116, very fine, extremely rare. Note: Ghiyath al-Din Bahadur Shah reigned as the independent Sultan of Bengal from AH 720-724, 1320-1324 AD. His independent rule ended when his brother and rival claimant, Nasir al-Din Ibrahim, sought assistance from the Delhi Sultan Ghiyath al-Din Tughlaq to depose Bahadur Shah. As a vassal of Muhammad bin Tughlaq, Bahadur Shah minted coins in both their names from Bengal. The specimen being presented is an excellent example of this joint coinage of the Delhi and Bengal Sultanates. These specific joint issues are known to have been minted only during the year 728 AH, which is notably the same year that Bahadur Shah rebelled and reasserted his full independence. This particular coin was issued from the mint of Hadrat Sunargaon.