[This] face of Christ, minted in a quite common Byzantine coin of Manuel I (1143-1180 AD) is clearly different from the much more popular TS-like face of many Byzantine coins of these centuries.
It shows short hair, no beard and a strange sign, a bubble on the chin bottom. Can someone give me more information on this face?
In particular I ask for a similar image from a fresco or an icon of this period showing a face of Christ having the same featuires.
I also ask for an explanation of the bubble on the chin bottom (it is not a defect because it also appears in other different coins).
Thank you in advance. Best regards.
Click on the picture to enlarge it.