The card of Hall of Famer Hugh Duffy by 1909 the manager of the Chicago White Sox is one of the more difficult to obtain cards in the E90-1 set which was issued over the course of a three-year period. Graded PR-FR 1 by PSA the card is well-worn but still highly sought-after by advanced collectors as one of the more scarce cards in this popular issue. Population DataPSA Population: 16 total graded 6 at this level 9 higherSGC Population: 22 total graded 1 at this level 13 higher