Veering a little further north: Bhutan 1/2 Rupee / Deb 1790 - 1820 (ND) N# 47926; Copper 3.79g; First Period Established as a priestly monarchy in 1652 the Himalayan kingdom of Bhutan relied on coins from the nearby Indian state of Cooch Behar. After the British East India Company closed the Cooch Behar mint in 1790 CE, they began to strike their own coins.
I have a friend who has a lot of those AR Karshapanas and is kind of a guru at identifying them. Can introduce you if you want. I see I have only 38 of them, and they still seem like a bargain for such an old coin. Here is one from Dehli Sultans, Qutb al-Din Murbarak, BI 12 gain, c.1316-1320 AD (dated AH720)