Happy Valentine’s Day! Show your love with a stamp.
The Postal Service issued its 29-cent and 52-cent Love stamps on May 9, 1991, in Honolulu, Hawaii.
The 29-cent Love stamp, depicting the earth in a heart shape, came in both sheet and booklet versions. The 52-cent stamp features a loving couple of birds.
Designed by Harry Zelenko of New York City, the 29-cent stamps were printed in the photogravure process. The US Banknote Company produced sheet format stamps in panes of fifty, and the Bureau of Engraving and Printing produced booklets of twenty stamps.
Designed by Nancy L. Krause, the 52-cent stamps were printed by the American Bank Note Company in the photogravure process and issued in panes of fifty.
Source: http://arago.si.edu/index.asp?con=1&cmd=1&tid=2034816