Uranium Glass Sherbet Cup with Ribbed Pedestal Base

This is a vintage sherbet cup or dessert dish crafted from transparent green 'uranium glass,' which is notable for containing a small amount of uranium oxide that causes the glass to fluoresce bright green under ultraviolet light. The cup features a flared, conical upper bowl with smooth interior walls and a subtle paneled or faceted exterior structure that catches the light. It is supported by a short, integrated stem that transitions into a wide, decorative pedestal base. The base is of particular interest, featuring a deeply molded radial rib pattern extending from the center to the outer edge, which adds visual texture and stability. The glassware appears to be characteristic of American Depression-era glass, likely dating between the late 1920s and early 1940s. Its delicate, thin-walled construction and the specific shade of light green are indicative of production by major manufacturers of the period such as Hazel-Atlas, Federal Glass, or Hocking Glass Company. Looking at the condition, the glass retains a high degree of clarity with no visible inclusions or large bubbles common in lower-quality pressings. While the image shows minor light reflection, the surface appears largely free of significant chips or cracks on the rim and base, though a close inspection for 'flea bites' would be recommended for a final appraisal. The craftsmanship is consistent with high-volume mold-blown or pressed glass of the early 20th century.

I have examined the digital images of this vintage sherbet cup, which I have identified as a specimen of American Depression-era green uranium glass. Based on the flared bowl, faceted body, and distinctively ribbed pedestal base, this piece is consistent with the 'Miss America' pattern produced by the Hocking Glass Company (1935–1938) or similar patterns by Hazel-Atlas. The fluorescence indicates the presence of uranium oxide, confirming its category within the 'Vaseline' or uranium glass market. From this visual inspection, the item appears to be in 'Excellent' condition with no major chips or fractures visible on the rim or the delicate ribbed base. However, market value for single sherbet cups remains relatively low due to the high volume of production during the 1930s. They are common compared to rarer forms like pitchers or butter dishes. Current market comparables show single stems selling between $12 and $28 depending on the specific manufacturer and regional demand for glow-glass collectors. Limitations of this appraisal: A physical examination is required to detect 'flea bites' along the ribs and rim which can decrease value by 50%. Furthermore, while the fluorescence is a strong indicator of age, modern reproductions exist; a Geiger counter test would provide definitive scientific confirmation of uranium content. To finalize this appraisal for insurance purposes, I would require a physical inspection of the mold marks and tactile verification of the glass weight and edge wear.