For the weight it should indeed be a 4 Tanki. The only curiosity is the Ilahi date 44. The Tanki's of Ahmadabad are known with Ilahi years 46 to 50.
According to Hodivala: Historical Studies in Mughal Numismatics (Bombay, 1976) the Tanki was introduced to create a fractional currency of 1/10 of a heavy Akbar
Tanka. A decimal system based on the Tanka.