(Stationery) Envelope Advertising Covers, balance of 11 ad covers mostly illustrated, 1860-90's; various companies including The Weaver Mailing Envelope and Box Company - Philadelphia, Pa., J.M. Hansell's Sons - Philadelphia, Pa. (3 different, two with enclosures including envelope samples), etc.; some flaws, Very Fine overall. Estimate  $200 - 300. $0 (Image)