The astronomical rise in value of T206 Hall of Famers in recent years is well-documented; the only T206-related cards with higher demand are those with difficult backs.  Presented is an example of both, an attractive Christy Mathewson "White Cap" pose graded VG 3 by SGC, with a tougher Sovereign 150 back.  Graded VG 3 by SGC, the card does show soft, rounded corners and centering high and to the left.  The Sovereign reverse is printed dark and clear, with some very light soiling visible.  A highly-coveted example, certainly one of the tougher backs available with this pose.