11th International Botanical Congress, Douglas Fir, Pseudotsuga menziesii, First Issue USA

United States Commemorative Postage Stamp, 11th International Botanical Congress, Douglas Fir, Pseudotsuga menziesii,

The First International Meeting of Botanists Held in the United States,

Issued August 23, 1969 in Seattle, Washington,

First Day of Issue Cover, FDC, Fleetwood Engraving Cachet, Unaddressed,

Cover in Removable Transparent Poly Sleeve and Mailed With Protection,

Made in the USA


Genuine First Day of Stamp Issued Cover Cancelled on the First Day of Issue Date by the U.S. Postal Service,