The 4-cent stamp marking the 25th anniversary of the National Apprenticeship Act and honoring the National Apprenticeship Training Program was issued on August 31, 1962, through the Washington, DC, post office. Depicted in the design is an elder's hand offering a micrometer to an outstretched young hand. In his design, New York City artist Robert Geissmann used the micrometer, the instrument of the journeyman machinist, to symbolize the transfer of skill witnessed through apprenticeship.
The stamp was printed by the rotary process, electric-eye perforated, and issued in panes of fifty stamps each. An initial printing of 120 million stamps was authorized.
Postal Bulletin (August 9, 1962).