Time Machine - Ancient Roman Coins January 06, 2000 John Comnenus-Ducas Empire of Thessalonica, 1237-1242. Billon Aspron Trachy. 25-28 mm. MHP-theta V to left and right of Mary, nimbate, seated facing. IWANNIC, John, no beard, standing facing, holding labarum and globe. SB 2189 scarce Next Bid: $88.00