Delhi Sultanate Identification

Hello,

I need some help identifying this coin.  It appears to be a 1 Tanka - Bahlul Shah Lodis from Delhi Sultinate (India States), but the diameter is wrong and the script seems to be less detailed or crudely designed compared to the 1 Tanka (perhaps it is simply very circulated).

Here are the details on my coin:
Diameter = 16.5mm (at the widest point)
Thickness = 5mm
Weight = 9.36g



Thank you for any help in confirming the identity of this coin and the date.

Regards,
David

Yes same coin. Date is most likely AH 873 (Not 100% sure as most part of digits are out-of-flan).

can the date be ah911?

This is how i see it,

Yes indeed Sujit