This is an awesome vintage black felt derby bowler hat. The inside lining has the John B. Stetson logo. The inside band has the Stetson stamp and the shop that carried the hat " Henry Clytton & Sons Chicago". There is no size tag but, the opening is 8" X 6 6/8" and the circumference (around the ribbon band) is 23 5/8". I think based on the measurements it would be a size 7.5. This hat shows very little wear other then a green spot on the inside rim, it's in beautiful vintage condition.