Small ancient, help to ID

Hello experts

Another unknown here, no idea even if is greek, roman, byzantine

Very small

Diameter: 9.5mm

0.66g

Any comment will be greatfully appreciated

Geison

Tough one.

The reverse design with that small cross reminds me the tiny roman bronzes from their final century, or the small early byzantines.

Looked on these two places which are the most obvious to look on, and found nothing. And most of these have the obverse portrait looking right, yours is looking left. A strange portrait for a roman coin I have to say. Also tried Wildwinds, the woman portraits from Arcadius onwards, nothing too.

Also tried a wider search at Numista of ancient non-precious coins with the size range 8-12 mm and the weight range 0.5-1 g, nothing too.

We have a mystery here.

Thank you very much

I've done that searches also without results,

I guess might be ostrogoth or vandalic

Will keep searching, 

Thank you 

I have seen barbaric imitations with simmilar reverse

Reverse from theodoius II

Reverse of Zeno:

But never bust to left