Oregon Commission/Panama-Pacific International Exposition. Printed corner card on reverse of four legal size covers, front shows Illustrated Map of Oregon & route to the San Francisco Panama-Pacific Expo. various different frankings & Expo. markings including one registered cover franked with 10¢ Pan-Pacific, perf. 12 + two 2¢ Washington-Franklin with Model Post Office oval & Model Post Office Registry markings, 2nd cover with Model Post Office duplex cancel tying two 2¢ Pan-Pacific, perf 10 with Oregon State Building Expo. label at left, 3rd with 2¢ Pan-Pacific, perf 12, strip of 4 tied by Model Post Office duplex cancel & oval postmarks, last is Model Post Office machine cancel tying 2¢ Pan-Pacific, perf 10, one cover with vert. fold, Very Fine and unusual. Estimate  $300 - 400. $0 (Image)