Boston Braves team-signed baseball dating from the club's 1948 National League championship season. This ball comes with the special provenance of originating directly from the personal collection of Braves catcher Phil Masi. The Official National League (Frick) ball has been signed in blue fountain pen by the following twenty-four team members: Spahn, Masi, Sain, Keely (coach), Antonelli, Shoun, Cooney (coach), Bickford, Fitzsimmons (coach), White (coach), Potter, G. Elliott, Beazley, Stanky (sweet spot), M. McCormick (sweet spot), Sturgeon, Barrett, Voiselle, Salkeld, Hogue, Conatser, Lyons, F. McCormick, and Johnson (coach). The additional signatures of Southworth (Mgr.), Holmes, and B. Elliott have been deemed clubhouse examples by PSA. Signatures grade 9/10 on average. MINT condition. Full LOA from PSA.