This coin was struck in Antioch, from April through August, 527 AD. Both emperors co-ruled during this five-month period, ending with Justin I's death in August at the age of 77. Very few of these coins are known, of course there's always the chance that more will show up as coin hoards are discovered. According to Hahn, three specimens have been recorded, although that number is always subject to revision. Still, this is a decent example, with much of the obverse legend visible. The surfaces are pretty rough, but I've seen worse. Byzantine Empire, April-August 527 AD AE follis, 32 mm Antioch mint Justinian I and Justin I (co-emperors) Obverse: Crowned, draped, and cuirassed facing busts of Justin I and Justinian I; cross above Reverse: Large M; cross above, stars flanking; Г//ANTIX Crude near VF, with a nice green and brown patina and much of the legend visible. Very rare; Justinian I and Justin I co-ruled for five months, ending with Justin I’s death. DOC 14 var. (officina); SB 129; MIB 10 13.4 grams Please feel free to post your coins of Justin I and Justinian I, or anything else you wish. Thanks.