AI identification & appraisal estimate

Mission-Style Slag Glass Table Lamp

Submitted photo of Mission-Style Slag Glass Table Lamp
Photo submitted by the user — not generated by AI

AI Estimated Value

Not an official valuation

$40 - $75

AI estimate as of January 17, 2026 · verify with a professional before acting

AI-Generated · Verify before acting

Everything on this page 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 Item Analysis

This item is a four-sided pyramid-shaped table lamp featuring a leaded slag glass shade in the Mission or Arts and Crafts style. The shade is constructed with geometric panes of cream, amber, and green slag glass, arranged in a transitional Prairie-style motif with vertical chevrons and horizontal banding. The construction utilizes copper foil and lead soldering with a dark, aged patina finish. The shade is topped with a square metal cap and a molded decorative finial. The base appears to be made of cast metal with an ornate, fluid floral or foliate design, common in late 20th-century reproductions. Visible condition issues include a significant fracture on one of the amber glass panels on the right side of the shade. Notably, the lamp is equipped with a modern black plastic cord and an inline thumb-roll switch, indicating a contemporary manufacturing date, likely from the late 1980s to the 2000s, rather than being a true period antique from the early 20th century. The quality is indicative of mass-market decorative lighting rather than studio-level craftsmanship, though it maintains a classic aesthetic.

AI Appraisal Report

Based on my visual inspection of this Mission-style table lamp, I have determined it is a contemporary mass-market reproduction rather than a period piece from the Arts and Crafts movement (c. 1900-1920). Key indicators of modern manufacture include the cast metal base with late-20th-century floral motifs and the black plastic cord with an inline thumb-roll switch, typical of 1980s-2000s production. The shade utilizes leaded slag glass in a geometric Prairie-style motif; however, the copper foil technique and solder patina lack the refinement of studio-level craftsmanship from makers like Stickley or Handel. The condition is compromised by a significant fracture in an amber glass panel, which severely impacts the value as repair costs would exceed the replacement cost of a similar secondhand unit. The market for reproduction Mission lighting is currently saturated, with high supply and moderate demand. Comparables for similar decorative lamps in good condition typically sell between $80 and $120; however, due to the structural damage and its status as a modern utility item, the value is diminished. This appraisal is limited by the digital nature of the inspection. A physical examination would be required to assess the weight and composition of the base metal (potentially white metal vs. bronze), confirm the stability of the remaining glass panels, and check for any manufacturer hallmarks on the socket or interior rim. Without provenance or a maker's mark, this remains a decorative household item rather than a collectible antique.

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