Louisville Slugger white ash blonde unbranded bat measuring 35" long and weighing 32.2oz as used by Berg during his finest statistical MLB season in 1929. The bat shows excellent use including pine tar residue, ball marks, and grain swelling. Most notably, the barrel features the highly coveted period Hillerch & Bradsby Co. side writing, "2-6-17=29 Morris Berg 6-17-29 Chicago Amer Lea BBC". This side writing is considered among advanced hobbyists to be the crown jewel of corroborative authentication for game used bats placing them in the hands of the player themselves. Berg was an important figure in the United States efforts during World War II providing vital intelligence on the Nazi regime and also collecting data while on the 1934 US All-Star Tour of Japan. One of only a few documented Berg bats known to exist. Includes LOAs from PSA/DNA (GU 9) and MEARS Authentication (A9.5): EX