Bank check, dated July 25, 1921, signed by Kenesaw Landis, first Commissioner of Baseball. PSA/DNA has encapsulated the check and certified the signature as “Authentic.” Despite his long tenure as Baseball Commissioner, this is the ONLY Landis signed check we can recall having seen. Its rarity notwithstanding, it is also significant because Landis signed it during his first full year as Baseball Commissioner, a post he held until his death in 1944. The check, drawn on the Continental and Commercial Trust and Savings Bank of Chicago, Illinois, is made out to Waldo C. Moore in the amount of $0.01 (one cent). Signed “Kenesaw M. Landis” in black fountain pen along the base (the signature is quite bold, but exhibits both moderate brushing and smudging). No endorsement appears on the reverse. While the amount of this check might seem odd, it actually relates to its provenance. Waldo. C. Moore was one of the most prominent numismatists and philatelists of the early 20th century and served as president of the American Numismatic Association in 1919 and 1920. He was also an avid check collector who especially enjoyed receiving checks signed by celebrities and prominent officials. His standard method when writing to celebrities was to send them a check in the amount of one cent. In return, Moore asked them to send him a one-cent check, which nearly all did. Today, those one-cent checks originating from the Waldo Moore Collection are highly prized by collectors. The check (8 x 3.25 inches) displays three vertical folds and a few light ink smudges on the front. There are a few light pencil notations (presumably in Moore’s hand), including Landis’ name, on the reverse, as well as a tiny strip of paper bearing the typed notation “H-809.” In Very Good to Excellent condition overall. Reserve $1,000. Estimate (open).