| 641 AD - 668 AD | 
| Hexagramm / Εξάγραμμον AR 21 | 
      SHH 2091 | 
    
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| Parameter Obverse Reverse Notes Reference  | 
      5.56 g   20.0-21.2 mm   6:00
o'clock   VF Cross potent on globe on three steps; B in right field; dEЧS AdIЧTA [ROmAN]IS clockwise around; border of dots. Facing busts of Constans with long beard, on left, and beardless Constantine, on right; both wearing crown and chlamys; cross between their heads; [D N CONSTANTINЧS C.CONSTAN] clockwise around; border of dots. Mint of Constantinopolis. BMC 87; Dumbarton Oaks II/2 55; Sear Byzantine 996  |