I recently purchased a lot of coins so please bear with me these are the last few I had issues with identifying. This one I believe to be a hammered Bhutan 1/2 Rupee but cannot figure out which one it is since the design can very so much with hammered coins.

Weight 3.5 grams
Diameter 20-21mm varies in areas
Does anyone know what KM# this one is or can they send me a link to the page if it is listed here on Numista.
Thank you again for your help
Matt