AI Appraisal Estimate

This is a vintage-style champagne coupe, also suitable for cocktails, featuring a wide, shallow parabolic bowl design common in mid-20th-century glassware. The piece is constructed from high-clarity clear glass, likely lead crystal given the brilliance and thinness of the walls. Its most defining characteristic is a thick, lustrous silver-toned band around the rim, which appears to be a platinum or silver deposit overlay. The stem is multi-faceted with a hexagonal or octagonal geometric profile, providing a balanced grip and reflecting light through the glass. It tapers down to a simple, circular flat base. The overall style is reminiscent of Art Deco or Mid-Century Modern barware, likely dating from the 1950s to 1970s. Regarding condition, the metal rim shows minor surface micro-scratching consistent with light use and age, but the plating remains largely intact without significant pitting or peeling. There are no visible chips or cracks in the glass body. A white adhesive price tag or inventory label is present on the foot, which may hide further maker's marks or acid-etched signatures, although many such pieces from manufacturers like Mikasa or Waterford often featured these near the center of the base.

I have conducted a visual examination of the Platinum-Rimmed Crystal Champagne Coupe. The vessel exhibits a refined MCM aesthetic, characterized by a precision-cut multi-faceted stem and a heavy metallic deposit rim. Based on current market trends, this piece appears to be a mid-late 20th-century production, possibly by Dorothy Thorpe or a contemporary such as Mikasa or Silver City Glass Co. The condition is excellent; the platinum overlay retains its integrity without the significant 'brassing' or oxidation often found in heavily used specimens. The clarity of the bowl and sharpness of the stem facets suggest a high-quality lead crystal composition. The market for mid-century cocktail glass remains stable, driven by the 'home bar' revival. Comparables for single coupes of this quality typically realize between $40 and $80 in retail vintage settings, though prices fluctuate based on the presence of a complete set (usually 4 to 8). Individual pieces are often purchased as replacements for existing collections. Factors impacting value: The lack of visible etched signatures limits the premium associated with a specific designer. Furthermore, the presence of the adhesive label on the foot prevents a full inspection of the base for maker’s marks. Documentation regarding provenance or original packaging would enhance the valuation. For a definitive authentication, an in-person inspection is required to verify the 'ring' of the crystal (indicating lead content), measure the weight, and conduct a conductivity or acid test on the rim to confirm the metal is indeed platinum rather than a chrome or silver substitute. The presence of micro-scratching confirms its vintage status but does not significantly detract from the functional or aesthetic value.