Copper engraving, made by Benard after de la Rue, depicting a mine, titled "Histoire Naturelle Coupe et Vue Générale d´une Mine." on the lower margin, titled "Minéralogie, 7me. Collection. Filons et travaux des Mines." as well as numbered "VI" on the right, signs of age (including creases, tears at the lower edge, behind passe-partout and glass in the frame, sheet cut-out approx. 36 x 45 cm, with frame approx. 57 x 65 cm, probably second half of the 18th century.
