U.S. Scott C7, the 10 cent map stamp, paying the 10 cent Contract Air Mail (CAM) rate between Chicago, Illinois and St. Paul, Minnesota. The cover is post marked in Chicago on June 7, 1926 and received that sameday in St. Paul. There is also an advertisement on the front for the "PORT OF SAINT PAUL" the "LAND", "WATER" and "AIR" "Gateway to the Great Northwest".
U.S. Scott C7 on 1926 Cover Inaugurating CAM Service to the Twin Cities
Returns accepted for up to 30 days from the date of mailing, for any reason, as long as the item is returned in the same condition that it was sent.