Jean-Jacques Barre became engraver-general of the Paris Mint in 1834, and this pattern reflects his early experimentation with weight reduction for the décime denomination — the "poids léger" designation placing it explicitly outside standard production parameters. France's decimal coinage system had already been established for decades by 1840, but periodic reassessments of module and weight were common as the mint balanced production costs against circulation durability.
Patterns of this type rarely left official hands. The Gayrard reference confirms institutional documentation, but surviving examples trace almost exclusively to cabinet dispersals from the 19th century.
Jean-Jacques Barre became engraver-general of the Paris Mint in 1834, and this pattern reflects his early experimentation with weight reduction for the décime denomination — the "poids léger" designation placing it explicitly outside standard production parameters. France's decimal coinage system had already been established for decades by 1840, but periodic reassessments of module and weight were common as the mint balanced production costs against circulation durability.
Patterns of this type rarely left official hands. The Gayrard reference confirms institutional documentation, but surviving examples trace almost exclusively to cabinet dispersals from the 19th century.