Advertising Postal Cards. Lot of 4 used Postal cards with various printed Expo. Advertising message on reverse, including on sent by the Judges of Awards, one from Shippers prepared to "Re-pack and re-ship the goods of Exhibitors", one advertising the Centennial Lead Pencils to be offered at the Centennial Exhibition in competition with foreign manufacturers, etc., Very Fine. Estimate  $200 - 300. $0 (Image)