Bronze follis, 30mm, 8.11gm, issued AD 820-829. Constantinople mint.
Obv: MIXAHL S ΘЄOFILOS, Facing busts of Michael, with short beard on left and, on right Theophilus, beardless both crowned the former wearing chlamys the latter loros between their heads a cross.
Rev: Large M between X X X and N N N which run parallel to eachother vertically, above cross beneath Θ.
References: Sear 1642.