Struck under Hetoum I (1226–1270) 

Obverse: Lion with a cross and medieval Armenian inscriptions, which read: Hetoum, King of all Armenians

Reverse: King Hetoum and his wife, Zabel; the inscriptions read: By the will of God

Despot Djuradj Branković, the first one is from the medieval fortress Smederevo, Serbia

the East west split happened in 395. The medieval era started in 476 with the fall of western rome. Byzantine empire didnt fall until 1453 (the end of the Medieval era to some) that being said the Byzantine empire spent the vast majority of its life in the Medieval era, so why is it always categorized as ancient? Unless they are seeing it as an unbroken continuation of Rome itself (still feels like a strech)