$1 Bernard Revel
Great Americans Series
Issue Date: September 23, 1986
City: New York, NY
Printed By: Bureau of Engraving and Printing
Printing Method: Engraved
Color: Dark Prussian green
President of the Etz Chaim Yeshiva and Rabbi Isaac Elhanan Theological Seminary, Bernard Revel combined a liberal arts program with Jewish studies and established a graduate school to train rabbinical leaders. If you look closely at Dr. Revel's beard you may be able to see this stamp's secret mark - the star of David. Placed there by the engraver, this practice is prohibited by the U.S. Postal Service. U.S. #2193 is part of the Great Americans series.
Issued between 1980 and 1999, the Great Americans definitive series features 63 designs, making it the larges set of face different Regular Issue stamps issued in the 20th century. One stamp honors a couple (Lila and Dewitt Wallace) while the remaining 62 commemorate individuals.
The series is characterized by a standard definitive size, simple design and monochromatic colors. The Bureau of Engraving and Printing produced most of the stamps, but some were printed by private firms. Several stamps saw multiple printings. The result is many different varieties, with tagging being the key to understanding them.