Hello and welcome. 
You can't see any details on the obverse at all, but I'd agree it's a Byzantine half-follis. I'd also suggest Kyzicus mintmark (KYZA) and, given the use of Roman numerals "XX" rather than Greek numeral "K", I'd suggest emperor Phocas as the likely issuer. This Wildwinds page lists coins of Phocas; scroll down to the one labelled "SB 670" - the one with the regnal date included.
Year 2 of Phocas would roughly correlate to AD 603.
You can't see any details on the obverse at all, but I'd agree it's a Byzantine half-follis. I'd also suggest Kyzicus mintmark (KYZA) and, given the use of Roman numerals "XX" rather than Greek numeral "K", I'd suggest emperor Phocas as the likely issuer. This Wildwinds page lists coins of Phocas; scroll down to the one labelled "SB 670" - the one with the regnal date included.
Year 2 of Phocas would roughly correlate to AD 603.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis






















