Championed by the weighty endorsement of skipper Connie Mack, the Monarch Typewriter Company of Philadelphia released (6) postcards of the World Champion Athletics as part of a promotional campaign. Nearly impossible to find in any condition, this complete set features a trio of Hall of Famers and other participants from the "$10,000 Infield". Each postcard is the only graded of each player by PSA. Included are PSA 1.5: (3 cards) with E. Collins, Oldring, Plank; PSA 1: (3 cards) with Barry, Bender and I. Thomas. The correspondence section is absent of any writing or cancellation markings. Due to the rarity of this set, it could not be registered with PSA.