Baseball Hall of Famer; member of the 1927 NY Yankees. Vintage fountain pen signature, “Very kindest regards, Herbert J. Pennock,” on an off-white 5 x 3 page, dated October 11, 1923. In fine condition, with collector’s typed notations to bottom edge, punch holes to left edge and unobtrusive mounting remnants to two corner tips. COA Steve Grad/PSA/DNA and R&R COA.