AI Appraisal Estimate

This is the underside of a dinner plate, likely part of a dinnerware set, made by Sabin. The plate is constructed from ceramic, exhibiting a light cream or off-white glaze that is smooth and glossy. The physical characteristics visible include a raised rim and a recessed center area on the underside, typical of dinnerware for stacking and stability. A prominent circular backstamp is centrally located on the base, which is crucial for identification. This backstamp is dark, likely black or dark brown, and features the text 'Crest-O-Gold' prominently at the top. Below this, in a curved line, is 'SABIN', and further below, 'Patented' is visible vertically along the left side. The mark also indicates '22 K', suggesting that the decorative elements on the obverse side of the plate (not visible here) may contain 22-karat gold detailing, a common feature in mid-20th-century decorative dinnerware. The overall condition of the visible underside appears very good with no obvious chips, cracks, or significant crazing. There is a slight circular scuff mark or discoloration over part of the backstamp, possibly from stacking or minor use, but it does not obscure the key details of the mark. The craftsmanship appears to be of good quality, typical of mass-produced yet elegant dinnerware from the post-war era, suggesting an estimated age from the mid-20th century (e.g., 1940s-1960s). The 'Patented' inscription further points to a specific period of innovation or design protection by the manufacturer. The smooth, even glaze indicates a well-fired piece of pottery.

Upon examining the provided image of the underside of a Sabin 'Crest-O-Gold' 22K Patented Dinner Plate, I can offer the following appraisal. The visible condition appears very good, with no obvious chips, cracks, or significant crazing, which is a positive factor. The backstamp is clear and legible, authenticating it as a Sabin piece with the 'Crest-O-Gold' and '22 K' markings, and the 'Patented' inscription. This consistency with known Sabin dinnerware patterns from the mid-20th century (likely 1940s-1960s) supports its authenticity as described. However, the perceived value of vintage dinnerware, particularly individual plates from mass-produced sets like this, is generally low unless it's a rare pattern, a complete set, or an exceptionally well-preserved and highly sought-after collectible. Sabin 'Crest-O-Gold' is a relatively common pattern from that era. Market conditions show a substantial supply of similar vintage dinnerware, keeping individual plate prices modest. There isn't significant demand or rarity for single plates from these sets, which typically have value primarily as replacements for existing sets. The main factor impacting value here is that it's a single plate, and the obverse side, which would display the '22 K' gold decoration, is not visible. The true aesthetic appeal and condition of the decorative elements heavily influence attractiveness to buyers. The slight scuffing on the backstamp is minor and doesn't detract significantly. It is crucial to note that assessing authenticity solely from an image has limitations. While the mark appears genuine, a physical inspection would allow me to verify the tactile quality of the ceramic, the exact shade of the glaze, the weight, and to meticulously check for subtle hairline cracks, repairs, or manufacturer defects that are not visible in the photo. Furthermore, verifying the condition of the 22K gold embellishments, which are not visible here, would be paramount for a full appraisal. Without seeing the front of the plate, the full aesthetic value and any potential damage to the gold rim are unknown. Thus, my valuation assumes typical wear for such an item based on the visible excellent condition of the base.