Registered/Jun. 11, 1904/Exposition Station/St. Louis, Mo. Violet four line Expo. handstamp (Bomar STL04-08B) on cover to Chicago franked with five 2¢ Louisiana Purchase (one with trivial light corner wrinkle) tied by St. Louis oval cancels, cover with "Louisiana Purchase Exposition/Committee on Souvenir Gold Dollars", Very Fine and rare, this is unrecorded in the census and the earliest known usage of this marking by almost a month. Estimate  $400 - 600. $0 (Image)