1-7/16x2-5/8". 1909-11 T206 Baseball is called "The Monster" for good reason. It's one of the most widely-collected sets of any era. T206 also contains the single most famous card in the hobby, one recognized even by non-collectors. While most cards are easily obtained, the release has some very scarce options, with 16 back varieties in all, led by the nearly-mythical Honus Wagner card. Richard William "Rube" Marquard  was an American left-handed pitcher in Major League Baseball in the 1910s and early 1920s. He achieved his greatest success with the New York Giants. Marquard was inducted into the National Baseball Hall of Fame in 1971. The autograph on this card is bold and excellently placed. PSA pop report indicates that this is the highest graded example.