A Mongol Mystery

[Pellinore]

I wonder if you could help with this large, thin Mongol copper coin (29 x 27 mm, 3.51 gr.) that is two-thirds flat on both sides. I don't know how to hold it, the lettering is rather confusing.
Is that a tamgha in the left picture at about four o'clock? The tamgha first encountered in Duwa Khan's - Here's a photo of the tamgha line in Badarch Nyamaa's beautiful book The Coins of the Mongol Empire and Clan Tamgha of Khans (XIII-XIV), p. 55. I didn't find a comparable coin in this book.

-- Paul

[THCoins]

Confusing indeed !
Agree on the Duwa Tamgha shape on the left. But puzzled by the swastika after this. Both do not seem to be text elements.
On the right side there seem to be parts of the kalima arranged in spiral Kufic. Horizontally one can see : لا إله
Then up, bending around the corner to the right, and thus upside down : محمد