City letter carrier cap badge, number 2
U.S. Post Office Department City Delivery Service "Heller" cap badge, number 2, with eyelet and cross pin attachment on verso. Elliptical medallion with upper portion marked "UNITED STATES" on ribbon pointing down; lower portion inscribed "MAIL." Numerical figure positioned in center of medallion. Badge patent date: APR.10.88.
The badge shown is an example of a design that did not meet U.S. Post Office specifications. It was worn by letter carriers (both rural and city) during the late nineteenth and early twentieth centuries.