best match I could find is british influence on india copper PICE
2300 g. copper
mint: Murshidabad
obverse: Trisul (trident) symbol, Persian inscription,
Falus, Shah Alam II
Reverse: inscription with value in Persian and Hindi, Persian mint name
Edge plain size varies 22-26 mm, thick letters varieties exist.
Date: ND //37 value g-$.75 vg- $2.00 f-$3.00 xf-$10.00
There is also a small coin 1500 g. listed but the pics are a hair different.
hope this helps
Joe