AI Appraisal Estimate

This is a vintage cobalt blue glass mixing bowl, likely manufactured by Pyrex during the mid-to-late 20th century. The bowl is characterized by its deep, vibrant blue hue and translucent quality. It features a classic, rounded silhouette with a slightly flared, dark-trimmed rim and a stable, flat base. The glass is thick and durable, typical of tempered soda-lime glass products intended for kitchen use. The color is consistent throughout the body of the vessel, with no visible swirling or inconsistencies in the dye. Regarding condition, the bowl appears to be in good used condition; however, light surface scratches and 'flea bites' near the rim are common in such utilitarian pieces and may be present upon closer inspection. The overall clarity of the glass remains high without significant clouding or 'dishwasher haze.' While maker's marks are not visible from this specific overhead angle, such pieces typically feature an embossed circular logo and style number on the bottom of the base. This piece represents a popular mid-century modern aesthetic and is highly sought after by collectors of vintage kitchenware for its combination of functionality and decorative appeal.

I have conducted a visual examination of the Vintage Cobalt Blue Pyrex Mixing Bowl. This specimen appears to be the 'Colonial Blue' or 'Cobalt Blue' 2.5-quart (403) model, widely produced in the late 1980s and 1990s. The bowl exhibits high clarity with a consistent deep hue and an absence of the 'dishwasher haze' that frequently devalues vintage soda-lime glass. The flared rim and thickness are consistent with authentic Corning-manufactured Pyrex. Current market demand for cobalt blue kitchenware remains steady due to its compatibility with mid-century modern and farmhouse decor styles. Comparables for single bowls in this size and color range from $35 for utilitarian-grade pieces to $75 for those in mint condition. The reported 'flea bites' near the rim and light surface scratches place this item in 'good used condition' (GUC), slightly tempering its top-end value. While rare limited-edition patterns fetch higher premiums, this primary-color piece is valued for its durability and aesthetic appeal. Limitations of Image Appraisal: This valuation is based solely on digital images. Without a physical inspection, I cannot verify the presence of the underside embossed logo (which would differentiate it from imitators like Hazel-Atlas) or detect micro-cracks that could lead to thermal shock failure. A full authentication would require tactile inspection of the rim for smoothness and back-lighting to identify internal stress fractures. Provenance regarding original retail origin would further bolster the verification process.