Province Bithynia-Pontus
City Calchedon 
Region Bithynia
Reign Gordian III
Obverse inscription ⳞΑΒ ΤΡΑΝΚΥΛΛΕΙΝΑ Ϲ
Obverse design diademed and draped bust of Tranquillina, r.
Reverse inscription ΚΑΛΧΑΔΟΝΙΩΝ
Reverse design Apollo holding lyre, reclining on swan flying l.

Coin no. 12 of RPC VII.2, 1854


Museum Kunsthistorisches Museum, Vienna (Austria)
Inventory no. GR 15454
Diameter 24.9
Weight 8.27
Axis 12