Won US and British Opens plus U.S. and British Amateurs in 1930 to become golf's only Grand Slam winner ever; from 1922 - 30, won 4 U.S. Opens, 5 U.S. Amateurs, 3 British Opens, and played in 6 Walker Cups. Jones also founded Masters tournament in 1934. Large and bold fountain pen signature, “Robt. S. Jones, Jr.,” on an off-white 5 x 3 card. In fine condition. COA Steve Grad/PSA/DNA and R&R COA.
