I bought this
cheap in a small lot of
Roman coins twenty years ago. No expert of the caliber as such found on this site has ever seen it, but many with some relative coin knowledge have been plain baffled by it through the years.
Therefore I submit this as a
bit of a challenge and would be delighted to get an
identification.
It is definitely bronze overlaid with gold, with an
average diameter of 25mm. 1mm thick.
In my humble opinion I would guess its some sort of ancient forgery.
I wait anxiously !!!

yours truly ...
Dom