These have been produced by a variety of techniques including line engraving, typography, lithography, photogravure and web-offset.
en.wikipedia.org Historically, the major techniques (also called media) involved are woodcut, line engraving, etching, lithography, and screenprinting (serigraphy, silkscreening) but there are many others, including modern digital techniques.
en.wikipedia.org Finally, they would file and polish their work to remove all seams, finishing off with engraving and a makers mark.
en.wikipedia.org In 1717, on his second visit, she gave him a print of the engraving: he reciprocated by giving her a jewel.
en.wikipedia.org The reverse is plain which allows room for the engraving of the rank, name, and unit of its recipient.
en.wikipedia.org