Monochrome print of Notre-Dame Cathedral in the style of an etching, bearing a signature reading 'Yvon'

This artwork is a monochrome print depicting a detailed architectural view of the Notre-Dame Cathedral in Paris, presented on a heavy off-white paper mount with deckled edges. The image captures the cathedral facade, the surrounding riverbank, bridges, and trees rendered in a fine linear technique that appears consistent with an etching or engraving. In the lower right corner of the mount, there is a handwritten signature reading 'Yvon' oriented vertically. Additionally, a small numerical indicator '26' is visible near the bottom right corner of the plate impression. The paper shows mild age-related toning and discoloration, typical of vintage or antique printed ephemera, with a small blue ink mark visible near the lower left of the mounting board. Because this item is evaluated solely from a photograph without physical inspection, the signature and printed medium are unverified and subject to in-person expert authentication. The stylistic presentation suggests a mid-20th-century or earlier tourist or portfolio print, but the lack of direct physical context necessitates hedged language regarding its true origin, age, and reproduction method.

Based on what I can see in the photograph, this monochrome print presents a detailed architectural view of the Notre-Dame Cathedral rendered in a fine linear technique resembling an etching, mounted on heavy off-white paper with deckled edges. The lower right mount bears a handwritten signature reading 'Yvon' alongside a small numerical indicator '26'. I cannot verify from a photo alone whether the signature is authentic or if the piece is a hand-pulled etching versus a photomechanical reproduction, as visual inspection under magnification and physical handling are necessary to determine the true printing method and paper composition. The paper exhibits mild age-related toning, and a small blue ink mark is visible near the lower left mounting board. Assuming the attribution and the signature hypothetically relate to a period print by an artist or publisher associated with the 'Yvon' mark, comparable vintage architectural tourist or portfolio prints of Paris typically trade within a $150 to $300 range in the current market, driven by steady demand for mid-20th-century or earlier European topographical prints. However, if physical inspection reveals this item to be a later modern reproduction, decorative copy, or simply 'in the style of' rather than a period-appropriate printing, the market value would likely drop significantly to the $25-$50 range, serving purely as decorative ephemera. To confirm authenticity and establish a more precise valuation, an in-person expert appraisal, physical inspection of the ink layer and plate impression, and potential provenance documentation would be required.