A catalogue for advanced collectors of postage stamps, stamped envelopes and wrappers; (1890)
Collin, Henry, Calman, Henry L, Scott Stamp and Coin Company, Inc · New York : The Scott Stamp and Coin Co., Limited · leaf 110
UNITED STATES OF AMERICA. ii66 c … c::— D GUM D. Similar to gum A, but both the upper and lower edges are curved. GUM E. The upper edge of straight lines slanting slightly upwards from either corner and meeting in a slightly rounded point. The lower edge, while generally conforming to the outline of the upper, is scalloped and…
Postage stamps · Covers (Philately)
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.