Sulayman b. Musa
787-789 AD
This is a coin with a story. Tabaristan was right at the edge of Islamic domination and maintained the Sasanid style with the king's bust until they capitulated to Islam. So this is truly a transitional issue that looks like a king's bust but the face has had geometrical shapes overlaid in it.
Fun fun coin at a cusp of history.
24mm, 2.08 grams
Some flatness of strike