AI Appraisal Estimate

AI-generated estimates · not official valuations

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Submitted item photo
Submitted photo · June 4, 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

Cobalt Blue Glass Bowl with 'S' Marking

Decorative Glassware

AI Estimated Value

·Not an official valuation·Verify before acting

$25 - $45

As of June 4, 2026

AI Item Analysis

·AI can make mistakes·Verify before acting
This item is a vibrant cobalt blue glass bowl, primarily viewed from its underside. The bowl exhibits a glossy, reflective surface that highlights the deep blue hue, appearing almost iridescent in certain reflections. Its construction appears to be machine-made, indicated by the uniformity and consistent thickness of the glass. The exterior surface of the bowl is textured, possibly a hammered or dimpled effect, which adds to its visual interest and tactile quality. This texture is visible through the variations in light refraction on the bowl's exterior. The base of the bowl features a prominent circular depression, typical of pressed glass items. Within this circular depression, near the center, a raised capital letter 'S' is clearly discernible, likely a manufacturer's mark, mold number, or an indication of a specific pattern or series. The rim of the base (where it would rest on a surface) appears polished or smoothed. The overall form suggests a functional bowl, possibly for serving or decorative purposes, with a somewhat scalloped or undulating edge, which can be inferred from the irregular protrusions visible around the circumference of the bowl's base. The condition appears to be good, with no visible chips, cracks, or significant abrasions on the portion shown. The strong, uniform color suggests a specific formulation of glass. The style period is likely mid-20th century to contemporary, given the prevalence of pressed glass in such rich colors during those eras. The robust construction and distinctive color are indicators of its potential quality.

AI Appraisal Report

·AI can make mistakes·Verify before acting
Upon visual inspection of the provided image, this cobalt blue glass bowl presents in good condition, showing no evident chips, cracks, or significant abrasions. The uniform color and machine-made appearance, with its 'hammered' texture and typical pressed glass base depression featuring a raised 'S' mark, strongly suggest a mid-20th century to contemporary production. Authenticity as a period decorative glass item appears reasonable based on these visual cues, consistent with mass-produced tableware or decorative pieces from that era. Market conditions for such items are generally stable but not exceptionally strong. Comparable cobalt blue pressed glass bowls, often unmarked or with similar simple manufacturer's marks, typically sell in the $20-$50 range. Demand for decorative colored glass remains consistent, but this specific piece does not exhibit characteristics typically associated with high rarity or highly sought-after designers/manufacturers, which would drive value significantly higher. The 'S' mark, without further context or research into specific manufacturers, does not currently elevate its market standing. Factors impacting its value include its attractive color and good condition. However, its common pressed-glass manufacturing technique and lack of a definitive, recognized maker's mark limit its ceiling. For full authentication, especially regarding the 'S' mark, in-person examination would allow for tactile assessment of the glass quality and texture, microscopic inspection for manufacturing details, and potentially UV light testing to further confirm its age. Provenance documentation, if available, linking it to a specific manufacturer or collection, would significantly bolster its authenticity and could influence value; however, this is rarely available for such mass-produced items.

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