AI Appraisal Estimate

This is a mid-19th-century steel-engraved monochrome map of the Somme department in France, executed by the renowned cartographer Victor Levasseur. The map is printed on a rectangular cream-colored paper substrate. The central cartographic element displays the department's borders, river systems, and major towns. Surrounding the geography is an elaborate decorative border characteristic of Levasseur's 'Atlas National Illustré' style (circa 1845-1852). The vignettes depict regional industries, agriculture, and historical figures, including scenes of farming, livestock (cattle and sheep), and a portrait of a local dignitary in the upper left. Notable text includes 'DEP! DE LA SOMME' at the bottom and statistical data regarding population and administration on the left and right margins. The craftsmanship is high, showing fine line detail in both the topographical hatchings and the architectural backgrounds. Condition-wise, the print shows minor undulation across the paper surface, likely due to moisture or improper storage, and light foxing or oxidation consistent with its age of approximately 175 years. Faint vertical creases suggest it may have once been part of a bound volume. The margins appear clipped but intact enough for professional framing.

I have virtually examined this monochrome steel-engraved map of the 'Département de la Somme' by Victor Levasseur, originating from his celebrated 'Atlas National Illustré' (c. 1850). The piece exhibits the quintessential aesthetic of the period, characterized by neoclassical vignettes that blend geography with allegorical and industrial iconography. Based on visual evidence, the engraving displays the crisp line-work expected of an authentic mid-19th-century strike. Condition is a primary valuation factor. My examination reveals minor paper undulation, faint vertical fold lines consistent with historical atlas binding, and scattered foxing (oxidation spots). While these issues are typical for a 175-year-old document, the fact that this is a monochrome version rather than the more sought-after hand-colored edition slightly limits its ceiling. The margins appear somewhat tight but sufficient for conservation framing. The market for Levasseur maps remains stable due to their decorative appeal; however, they were produced in significant quantities, making this a 'common' rarity. Current demand favors specimens with vibrant contemporary or later coloring. Comparables for monochrome Somme plates sold in reputable galleries and auctions generally fall within the $150 to $250 range. Limitations: This appraisal is based solely on digital images. Without an in-person examination, I cannot verify paper weight, watermarks (e.g., 'Lettres' or 'Lecuyer'), or the presence of acidic residue from historical mounting. A physical inspection is required to confirm the absence of modern reproductive techniques or restoration. Verification of provenance or a 'Bureau de la Statistique' blind stamp would further solidify authenticity.