Denver City Col/Advertised/Jul 23 66/Unclaimed, blue cds with matching "Unclaimed" straight line handstamp, on cover from Philadelphia to Julesburgh, C.T., redirected to Denver with manuscript notation "P.M. will please forward to Denver City if not called for in 10 days", along with manuscript "Due 3¢", a blue Denver backstamp dated Aug 29 may indicate when the letter was picked up or forwarded to the dead letter office, some minor cover staining, flap tear through Denver backstamp, overall Very Fine, ex-Persson. Estimate  $200 - 300. $0 (Image)