Any byzantine coin experts?

Hello guys!

Any help regarding the coin in the following photos would be deeply appreciated!
I can tell that it is Byzantine. As you see in the following photos, it is approximately 22mm (=0.22cm -or- 0.087in) in diameter.



What is troubling me is that the coin seems to be almost prefectly round in comparison to photos of similar Byzantine coins that I find.

Thank you!
Best regards from Athens,
Chris

perhaps you can find it here:
http://www.wildwinds.com/coins/sb/i.html

It is an anonymous follis, similar to the ones below:

Byzantine Empire: Æ Anonymous Class A1 Follis, Attributed to John I Tzimisces (969-976), Constantinople Mint (Sear-1793)

Obv: + EMMA NOVHΛ IC - XC; Bust of Christ facing, holding book of gospels, with nimbus. Cross on book of gospels; cross in each arm of gospel.
Rev: + IhSYS/ XRISTYS/ bASILEY/ bASILE; Legend in four lines.




Byzantine Empire: Æ Anonymous Class A2-40b Follis, Attributed to Basil II & Constantine VII (976-1025), Constantinople Mint (Sear-1813)

Obv: + EMMA NOVHΛ IC - XC; Bust of Christ facing, holding book of gospels, with nimbus. Cross on book of gospels; cross in each arm of gospel.
Rev: + IhSYS/ XRISTYS/ bASILEY/ bASILE; Legend in four lines.

Great!

It looks more like the first of the two (Byzantine Empire: Æ Anonymous Class A1 Follis, Attributed to John I Tzimisces (969-976), Constantinople Mint (Sear-1793))

Someone in the past must have tried to make it more round and coinish.

Anyway, thanks again for the help!!

Chris