AI Appraisal Estimate

This is a vintage Pyrex 'Cinderella' style mixing bowl, model #441, which typically holds 1.5 pints. It is constructed from thick, durable opal glass (milk glass) with a fired-on exterior color in a pale chartreuse or lemon yellow. The Cinderella design is distinguished by its unique asymmetrical handles: one side features a wider, flatter handle that doubles as a pouring spout, while the opposite side has a more tapered handle. The interior of the bowl remains a clean, glossy white. This specific color way is most famously associated with the 'Gooseberry' pattern, though this particular piece is a solid-colored coordinating bowl often sold in sets during the late 1950s and 1960s. The bowl exhibits a high-gloss finish typical of well-preserved mid-century kitchenware. Upon close inspection, the exterior finish shows minor 'dishwasher haze' or light scuffing near the base, though no significant chips, cracks, or deep flea bites are visible on the rim. The base likely contains an embossed Pyrex maker's mark with the model number and 'Made in USA.' This piece represents high-quality American industrial design from the mid-20th century, valued for both its aesthetic appeal and functional durability.

I have examined the digital image of the Pyrex #441 Cinderella bowl in sunny yellow, a coordinating piece for the popular Gooseberry pattern. Based on my visual inspection, the bowl appears to be an authentic mid-century piece manufactured by Corning Glass Works. The fired-on yellow finish maintains a good degree of original luster, though the noted minor 'dishwasher haze' and scuffing near the base are critical detractors. In the Pyrex secondary market, condition is paramount; the transition from a 'mirror' finish to a duller haze (often caused by harsh detergents) can reduce the value by 30-50% compared to a 'New Old Stock' specimen. The Gooseberry collection remains highly liquid and desirable due to its cottagecore aesthetic and mid-century modern appeal. Currently, demand for individual coordinating solids is stable, primarily driven by collectors seeking to complete a four-piece nesting set (441 through 444). Comparables for a single #441 in very good condition typically fall in the $50 range, whereas pristine examples can reach higher. However, authentication via digital image has limitations. To finalize this valuation, a physical examination is required to check for 'flea bites' (tiny nicks) along the rim and 'silvering' (metal transfer marks) which are often invisible in photos. I would also need to verify the embossed trademark on the base to confirm the specific production era and ensure the paint has not been 'restored' or over-painted. No scientific testing is required, but a 'flashlight test' would be performed in person to check for interior scratches that indicate heavy use.