WORLD COINS, India, Princely States, Indore, Copper Pattern ½-Anna (or Mudra), SE 1788, 20mm (appears to be unlisted in major references). In NGC holder graded MS63BN, erroneously described as "1/2M".
ex David Fore Collection, Baldwin's Auction 82, lot 989
NGC have called this a "1/2M" but it is really a ½-Anna or Madura, as referenced in the Fore Collection catalogue, because it does not appear that the coin can be a pattern ½-Mohur or ½-Mudra.
Estimate: £2000-2500