Watch List notes:

† Coins of India. East India Company. Bengal Presidency, Silver ½-Rupee, Benares mint, AH 1229 Year 17/49, larger than the coin in the previous lot at 22mm, appears to have been machine struck (Pr 149; PS 7.140; as KM 38).Pleasant about extremely fine, very rare.
The photo in KM has a circle for part of its differentiating mark which does not fit any of those listed by Pridmore or Stevens. This coin has no markings there at all.
Part of the David Fore Collection of British Indian Coins.

Estimate: £300-400