The Pratt Study Room houses approximately 100,000 coins and medals and 20,000 pieces of paper currency. The full range of numismatics is represented, from the beginnings in the 7th century B.C. to modern times. Particular strengths are in the coinages of the Greek and Roman worlds, Byzantium, and medieval and early modern England.

In addition to the main collection, which has recently been augmented by a purchase of over 4,000 coins of the Greek world, the numismatics room houses Yale’s portion of the coins recovered at the excavation of Dura-Europos. The University’s collection dates back to the early 19th century but was only transferred to the Gallery in 2001. A systematic effort is underway to improve the collection and integrate it further into the Yale curriculum.