This is a cylindrical wine bottle coaster, likely silver-plated, featuring a classic repoussé and chased decorative motif. The exterior wall is heavily embellished with a continuous 'Grape and Vine' pattern, displaying relief-carved clusters of grapes and intricate vine leaves with detailed veining. The piece is constructed with a flared upper rim and a solid, slightly stepped circular base. The interior appears to be metal-lined rather than wood-bottomed, suggesting a mid-20th-century manufacture. The color is a characteristic bright silver, though significant tarnishing and dark patina are visible within the recessed areas of the design, which serves to highlight the sculptural details. In terms of condition, there is evident surface oxidation and light scuffing consistent with age and regular household use. No deep dents or structural repairs are immediately visible in the image. Although maker's marks are likely located on the underside of the base (not visible here), the style is reminiscent of traditional English or American silver manufacturers such as Sheridan or Leonard. This piece represents a Neo-Renaissance or Victorian Revival style, which was popular for formal dining accessories throughout the 20th century.

Based on my visual examination of this silver-plated grapevine wine coaster, I find it to be a classic example of mid-to-late 20th-century silver-plate ware, likely produced by an American manufacturer such as Sheridan, Leonard, or F.B. Rogers. The 'Grape and Vine' motif is a quintessential Victorian Revival design, though the absence of a turned wooden base (replaced here by a full metal lining) strongly suggests a later mass-market production rather than a 19th-century origin. The condition is fair to good; while the repoussé work remains crisp, the heavy patination and oxidation in the recesses are typical for the material. I did not observe any 'bleeding' (base copper showing through the silver) which suggests the electroplating remains largely intact. The current market for silver-plated hollowware is highly saturated, leading to lower secondary market values compared to sterling silver. These coasters are common at estate sales and antique malls. Comparable sales for non-sterling decorative wine coasters of this style typically fall within the $40 to $80 range. Its value is driven primarily by its functionality and decorative appeal for formal dining, rather than rarity or investment potential. Limitations: This appraisal is based solely on high-resolution imagery. Without a physical inspection, I cannot confirm the base metal or look for the 'Silver on Copper' stamp or specific maker's marks on the underside. Full authentication would require an in-person examination to check for structural repairs, specific weight (to rule out pewter), and a loupe inspection of the rim for any thinning of the silver layer. Provenance or an original manufacturer's box would provide further clarity on the production date but would not significantly alter the market value.