Sorry to have taken so long on this one, but I haven't been able to get at my
collection for a few days, to confirm what I thought it was (the darkness of the scan made me rather uncertain).
It is a 'dam' (the largest
denomination of copper coin, at 40 to the rupee), issued by the Mughal emperor Akbar (1556-1605), and is probably from the Chitor
mint. It is dated 1001 AH (1593 AD), the 'line dot dot line' under the four linked circles on the
obverse (which should be turned 90 degrees anti-clockwise to get it the right way up).
The
type is listed in Krause's 'Standard Guide to South
Asian Coins and Paper Money' as KM 28.14 but is not illustrated.