Original mailing envelope which once held a set of 15 Detroit Togers postcards. Manila-style envelope measures approximately 6" x 4" with printing in the upper left announcing "Hughie Jennings and his Great 1907 Tigers - Fifteen choice Post Cards showing members of the DETROIT BASE BALL CLUB in action including their aggressive manager." The envelope is in poor condition torn on all sides with age-related toning and discoloration. Still a relatively infrequently-seen artifact a perfect companion to a Dietsche set.