AI Appraisal Estimate

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Submitted item photo
Submitted photo · June 20, 2026

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AI analysis below

AI appraisal

AI analysis & estimate

AI-Generated · Verify before acting

Everything below is generated by AI for informational purposes only. AI can make mistakes — the AI may misidentify items or misattribute them (artist, maker, brand, designer, origin, era). This is not an official valuation and should not be used for insurance, sale, tax, estate, legal, or lending purposes — or any decision requiring a certified appraisal. It is not an authoritative claim about any person, brand, or rights holder — do not share or rely on it as a factual statement about a third party. Always consult qualified professionals before making financial decisions.

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AI Identification

·Not independently authenticated·Verify before acting

Val St. Lambert Intaglio Frosted Crystal Mallard Duck Paperweight

Art Glass / Collectibles

AI Estimated Value

·Not an official valuation·Verify before acting

$40 - $80

As of June 20, 2026

AI Item Analysis

·AI can make mistakes·Verify before acting
This is a vintage clear and frosted crystal art glass paperweight, commonly attributed to the Belgian glassmaker Val St. Lambert. The item features a freeform, asymmetrical shape with a flat bottom and a curved, faceted top. The focal point is an intaglio-style engraving on the reverse side, showing two mallard ducks or waterfowl swimming. The design utilizes a contrast between polished clear glass and frosted/acid-etched textures to provide depth and detail to the feathers and surrounding water scene. The piece appears to be heavy, solid crystal, measuring approximately 3 to 4 inches in width. The craftsmanship is indicative of Mid-Century Modern European glass production, likely dating from the 1960s to 1980s. Notable features include the smooth, beveled edges and the intricate internal relief work. While the surface shows some light superficial scratches and shelf wear on the base, it remains in generally good condition with no major chips or cracks visible in the provided image. There are no immediate signatures visible from this angle, though such pieces are typically signed with an acid-etched mark on the base.

AI Appraisal Report

·AI can make mistakes·Verify before acting
After a careful visual examination of the provided images, I have assessed this piece as a vintage crystal paperweight, attributed to the renowned Belgian glassmaker Val St. Lambert. The item features a characteristic freeform, asymmetrical shape with a deep intaglio engraving of two mallard ducks, utilizing the contrast between the polished crystal body and the frosted relief to create excellent depth—a hallmark of Val St. Lambert's mid-20th-century production. While the piece exhibits high clarity and quality typical of lead crystal, I must note that devoid of a clearly visible acid-etched signature in the photos, this attribution relies heavily on the distinct stylized form and subject matter which align with known cataloged examples from the 1960s and 1970s. The condition appears to be generally good, with the description noting only light superficial scratches and shelf wear on the base, which is expected for a vintage object of this age. There are no significant chips or fractures visible that would severely devalue the piece. In the current secondary market, intaglio crystal paperweights have seen a softening in demand compared to their peak, but high-quality examples featuring wildlife motifs remain collectible. Comparables for similar Val St. Lambert duck paperweights typically sell in the $40 to $80 range, depending on clarity and the presence of the original foil label or signature. To provide a definitive authentication, I would require an in-person inspection to locate the faint acid-etched signature usually found on the base or side, as well as to verify the weight and refractive index of the crystal. Without physical handling, I cannot rule out the possibility of it being a high-quality reproduction by another European maker, though this is unlikely.

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