The T210 "Red Border" set is an enormous set of more than 600 minor leaguers that is divided into eight different series each featuring players from a different minor league. The 6th series featuring members of the Blue Grass League is commonly known as one of the more scarce. Cards in the 66-card set are rarely found in top condition; in fact while PSA has graded just 113 cards from the 6th series just 1 has graded above a 6.At the same time we recognize that particularly with prewar minor-league sets like the T210 Old Mill sets many collectors prefer to keep their cards raw. Still the grading company population reports in cases like these provide an excellent guideline for determining relative scarcity and difficulty in obtaining top-condition cards.This card of Paris Bournonites pitcher Reuben Harold is an outstanding example of the T210 Series 6 set. Particularly high-grade for the issue the card is well-centered with strong image and surface quality marred primarily by edge and corner wear that brings the grade down a bit. Still no higher-graded copy of the Reuben Harold card currently exists in a grading company holder.Population data:SGC Population: 3 total graded 1 at this level none higherPSA Population: 2 total graded none at this level none higher