(Spencerian Script) The Book of Copies, large bronze on black C.B. Knowlton publication ad label noting "Mr. C.B. Knowlton was a favorite pupil of the late P.R. Spencer, Author of Spencerian Penmanship", on cover to Elton, N.Y. franked with 1861, 3¢ rose tied by "Buffalo, N.Y., Mar 14" cds and rosette duplex, Very Fine and unusual. Scott No. 65  Estimate $200 - 300. $0 (Image)