The Memoirs of Jahāngīr (Jahāngīrnāma) 43: Coins.

43

It was also ordered in these days, that tankas of gold and silver, ten and twenty times heavier than the current gold mohur and rupee, should be struck. The legend on the face of the golden tanka was “Jahangir Shah, a.h. 1027,” and on the reverse, “Struck at Khambait, the 12th year of H. M. reign.” For the silver tanka, on one side, “Jahangir Shah, a.h. 1027,” with a verse round it, the meaning of which is, “This coin was struck by Jahangir Shah, the ray of victory.” On the other side was impressed, “Struck at Khambait, the 12th year of H. M. reign,” with this verse round it, “After the conquest of the Dakhin, he came from Mandu to Gujarat.” In no reign before this had tankas been coined except of copper. The tankas of gold and silver were inventions of my own, and I called them Jahangiri tankas.