Official Spalding National League baseball signed in blue ink on a side panel, “Best regards from ‘Hank’ Greenberg, Feb. 6, 1947.” Surface loss to his first name, a toned coating of shellac over the signature area, some brushing to ink, and evidence of a removed inscription above the signature, otherwise very good condition. A PSA/DNA label is affixed to a side panel (certificate of authenticity not present). Nevertheless, the ink remains bold and it is a true single-signed Greenberg baseball, which are scarce and highly sought after. RR Auction COA.