John Comnenus-Ducas. Empire of Thessalonica. 1237-1242. BI Trachy
22mm, 1.36 g. Thessalonica mint. 

Patriarchal cross.
John and St. Demetrius standing facing, holding model castle between them. 
DOC IV 27a; SB 2213.
VF, brown surfaces. 

From the Henry Chitwood Collection. 

147, Lot: 586. Sold for $180.
Used with permission of CNG (cngcoins.com)