Presented is a collection of twelve different cards from the classic T206 White Border series, exclusively featuring Old Mill and Polar Bear advertising reverses. Each card is graded and encapsulated VG-EX 4 by PSA (except for four VG-EX+ 4.5 as noted). Both Old Mill and Polar Bear advertising backs are seen slightly more infrequently than standard Piedmont and Sweet Caporal backs, and Polar Bears are an especially popular advertising back with collectors because of the distinct blue background and crisp white printing. This is part of a larger collection of T206 cards, which we have broken down into several smaller lots organized by condition. This collection consists of the following: Old Mill (6 cards): Burke, Flanagan, Jordan/Brooklyn batting (VG-EX+ 4.5), Knight/with bat, Kruger, and McQuillan/with bat (VG-EX+ 4.5). Polar Bear (6 cards): Brashear (VG-EX+ 4.5), Crandall/with cap, Lake/St. Louis no ball, Murray/batting, O'Leary/hands on knees (VG-EX+ 4.5), and Purtell. This is a very attractive collection of twelve cards in a very desirable grade from the legendary T206 series. The total SMR value in the assigned grades is $980, with no premium assigned for the unusual backs. Total: 12 cards. Reserve $300. Estimate $500+.