AI Appraisal Estimate

This item is the underside of a ceramic plate, likely a dinner plate or saucer, by the British pottery manufacturer Swinnerton's. It features the 'Harvest' pattern. The plate is made of earthenware or ceramic, given its typical creamy off-white base color and the type of manufacturing indicated by the backstamp. The physical characteristics visible include the slightly concave center where the backstamp is located, and the gently sloped rim of the plate. The backstamp itself is a prominent feature, printed in black, clearly stating 'SWINNERTONS' in an arched, decorative script, with a small teapot or coffee pot logo centered beneath it. Below this, it reads 'STAFFORDSHIRE', 'MADE IN ENGLAND', and finally '“HARVEST”' in bold capitals, denoting the pattern name. The overall condition appears to be good for its age, though there are some minor visible flaws. There is a small, irregular golden-brown smudge or mark near the top center of the backstamp, possibly a manufacturing imperfection or minor residue. Additionally, a small, distinct red mark, resembling a 'V' or checkmark, is present towards the bottom right of the backstamp, which could be an inspector's mark, a factory flaw, or later accidental marking. The glaze shows a uniform, slightly glossy finish, typical of domestic crockery of its era. Swinnerton's, based in Staffordshire, England, was active throughout much of the 20th century. Based on the style of the backstamp and common production periods for such patterns, this plate likely dates from the mid-20th century, possibly 1930s to 1960s. The distinct lettering and teapot logo are characteristic of Swinnerton's branding. The craftsmanship appears to be standard for mass-produced dinnerware of the period.

Upon examining the image of the Swinnerton's Staffordshire 'Harvest' pattern plate, I can assess its condition and potential value. The backstamp clearly indicates authenticity as a product of Swinnerton's, Staffordshire, made in England. The 'Harvest' pattern name is also distinctly visible. The plate appears to be in good condition, typical for its age, which I estimate to be mid-20th century (1930s-1960s) based on the backstamp style and manufacturing period of similar wares. The minor golden-brown smudge and the red 'V' mark are cosmetic imperfections, likely factory flaws or inspector's marks, and do not significantly detract from its value unless more severe or numerous. They do not appear to be chips or cracks. Market conditions for mass-produced vintage Staffordshire dinnerware, even from known manufacturers like Swinnerton's, are generally modest. While 'Harvest' is a recognizable pattern, it's not considered rare or highly collectible. Demand is primarily from individuals looking to complete sets, for decorative purposes, or for nostalgic reasons. Comparables on online marketplaces suggest individual plates like this typically sell in the range of $5 to $15, depending on the specific item, condition, and seller. Full sets or rare serving pieces would command higher prices, but a single dinner plate holds limited standalone value. Factors impacting value negatively include these minor imperfections and the commonality of the pattern and manufacturer. Factors positively influencing value are its clear backstamp and apparently good, unbroken condition. Limitations in authenticity verification from images alone include the inability to physically inspect for crazing, hairline cracks, chips on the rim or base, or the true feel of the glaze and weight. A hands-on examination would also allow for a more precise assessment of any wear to the pattern itself (if visible on the front), surface scratches, and overall structural integrity. Without provenance documentation, full authentication relies solely on visual cues and known manufacturing characteristics.