John Comnenus-Ducas. As emperor of Thessalonica, 1237-1242. BI Aspron Trachy (13mm, 0.74 g). Small module coinage. Obverse brockage. [Facing bust of Christ Pantokrator] / Half-length figure of John facing, holding labarum and akakia. S. Bendall, "Notes on the Coinage in the name of John Comnenus-Ducas of Thessalonica (AD 1237-44)," in NC 162 (2002), 14; DOC 23; SB 2208; cf. CLBC 14.11.4 and 14.19.4. Dark green patina, good detail on reverse. VF.
From the Collection of a Philhellene, purchased from Ancient Imports (Marc Breitsprecher).
The three example in Dumbarton Oaks Collection are also brockages.