EXERGUE

Etymology

Noun

exergue (plural exergues)

(numismatics) A space beneath the main design on a coin or medal for the insertion of the date or other minor inscription.

Source: Wiktionary

Ex*ergue", n. Etym: [F.,fr.Gr. i.e., accessory work. See Work.] (Numis.)

Definition: The small space beneath the base line of a subject engraved on a coin or medal. It usually contains the date, place, engraver's name, etc., or other subsidiary matter. Fairholt.

Source: Webster’s Unabridged Dictionary 1913 Edition