AI Appraisal Estimate

This item is a short, cylindrical glass tumbler made from rich, translucent cobalt blue glass. The overall color is a deep, vibrant blue. The tumbler features a frosted, etched white design depicting a sailboat on wavy water, with several birds (possibly seagulls) in flight above and around the sailboat. The sailboat itself has a prominent, large sail and a streamlined hull, rendered in a simple, artistic style. The frosted treatment gives the design a matte texture that contrasts sharply with the glossy, transparent blue of the glass. The glass appears to be of standard thickness, suggesting durability for regular use. Given the frosted design and the color, it likely dates from the mid-20th century, possibly 1950s-1970s, a period known for marine-themed glassware and colorful kitchenware. There are no immediately visible chips, cracks, or significant wear marks on the glass itself, suggesting good to very good condition, though a closer inspection would be needed to confirm microscopic scratches or fading of the frosted design. No maker's marks or signatures are discernible from the provided image. The craftsmanship appears to be typical for mass-produced decorative glassware of its era, with the etching likely applied through a sandblasting or acid-etching process.

I have visually examined this Cobalt Blue Glass Tumbler with Frosted Sailboat Design. The tumbler presents in what appears to be very good condition, with no visible chips, cracks, or significant wear; the frosted design also appears intact. Its vibrant cobalt blue color and frosted nautical motif are characteristic of mid-20th century decorative glassware, likely dating from the 1950s-1970s. The craftsmanship suggests a mass-produced item of that era, probably created using sandblasting or acid-etching. The lack of discernible maker's marks is common for such items. In terms of market conditions, similar vintage cobalt blue tumblers, even those with decorative motifs, are not considered rare. While there is a steady demand from collectors of vintage kitchenware and glassware, the market is not particularly strong for individual mass-produced pieces unless they are part of a rare set or by a renowned designer, which is not the case here. Comparables on online marketplaces and at antique shops typically range from $5 to $15 per tumbler, with slightly higher prices for pieces in exceptional condition. Factors impacting value positively include its appealing color and good condition. However, the mass-produced nature, lack of specific provenance, and the fact that it is a single tumbler rather than part of a set limit its upper value. Without physical inspection, I cannot definitively confirm microscopic scratches, subtle fading of the frosted design due to cleaning, or internal stress fractures. A in-person examination would also be necessary to check for any hidden maker's marks or to verify the tactile quality of the etching. Provenance documentation, such as original sales receipts or family history, would enhance authentication but is unlikely for this type of item. Scientific testing is not typically applied to items in this valuation range. Based on my visual assessment and market comparables, I estimate a retail replacement value of $15-25 for this single tumbler.