Denver Postal History Collection, 1876-2000, mounted on pages in 11 binders; extensive range of postmarks throughout, 1870's with a nice showing of various duplex cancels including fancy with "$" duplex killer, illustrated buggy and allover ad covers, 3¢ Treasury franking on Internal Revenue corner card cover, auxiliary handstamp with "…Street and Number, Wm. N. Byers, P.M." directive handstamp, 1880's with boxed "Returned From, Hotel, Shop or Office" date stamp, octagon date stamp, interesting 1886 1¢ Banknote bisect usage, 1886 registered usage with straight line Denver handstamp canceling, auxiliary handstamps, ad cover including 1887 stamp collar, 1888 & 1889 straight line postmarks (two different), later with range of machine cancels, airmails including later crash covers, etc., generally F.-V.F. or better. Estimate  $500 - 750. $0 (Image)