ADDENDUM: This baseball is from 1929 and not circa 1928 as was cited in the printed catalog and previously online.
Rare 1929 team-signed Detroit Tigers ball. Official American League (Barnard) baseball contains about 15 signatures, notables are Harry Heilmann, Chas. Gehringer, and Bucky Harris - it is also worth noting that this was Heilmann's personal baseball from the team. Nice white ball is close to EX, signatures average 4-6/10. Comes with PSA LOA.