The Duchy of Milan.

Covens, Jean & Mortier, Corneille. Le Duche de Milan dans touts son Estendue, divisé en ses Principales Partes, avec les Estates et Frontieres qui L'Environment Le Duche de Milan dans touts son Estendue, divisée en ses Principales Partes, avec les Estates et Frontieres qui l'environment...

Amsterdam. Covens et Mortier c1741
Copper engraved map of the Duchy of Milan from Covens & Mortier's " Nieuwe Atlas, Inhoudennde vier Gedeeltens der Waereld.. " Original full wash colour; verso blank.
The large map shows the full extent of the Duchy of Milan. It appears to be a reworking of de Wit's map of the same area, with a different title.
Decorative title cartouche and scale. Dark impression; bright full wash colour; printed on heavy paper; light toning; light damp stain to upper left corner, entering plate. Upper margin and title shaved, lower margin shaved to plate mark. Paper extended to left and extra fold to fit in atlas.

Covens & Mortier
as a firm existed between 1721-1778, taking over the business of Pierrre Mortier.
Johannes / Jean Covens and Cornelius Mortier were brothers- in- law following the former's marriage to Mortier's sister Agatha in 1721, when they also formally went in to partnership.

Under the Covens and Mortier imprint, Cornelius and Jean republished the works of the great 17th and early 18th century Dutch and French cartographers De L'Isle, Allard, Jansson, & De Wit. The firm would become one of the most prolific Dutch publishing concerns of the 18th century.
The company would pass down through the Covens family as Mortier had no children, changing the name to Covens & Zoon until Pieter Mortier IV a great grandson of the original founder joined the firm and saw the name restored to Mortier Covens & Zoon. ( See Koeman I p45).
Koeman I: C&M 535 by 682mm (21 by 26¾ inches).   ref: 3071  €450