Turquoise Art Glass Decorative Plate with Metallic Overlay

This is a circular decorative art glass plate featuring a vibrant turquoise or seafoam green translucent body. The most striking element is a dense, intricate gold or bronze-toned metallic filigree overlay that creates a complex mandala-like pattern across the entire center surface. The design is reminiscent of tatting or lace-work, featuring interlocking loops, central rosettes, and scrolling outer borders. The base glass exhibits a frosted or satin finish, providing a soft contrast to the shimmering metallic textures. The rim is slightly irregular and scalloped, suggesting a hand-finished or artisanal manufacturing process rather than high-volume industrial molding. Regarding condition, the metallic overlay appears largely intact, though there is a natural aged patina and minor darkening in certain crevices of the relief. The turquoise glass shows no visible cracking or significant chipping on the upper rim from this perspective. There are no immediate maker's marks visible on the front, though such pieces often date from the mid-to-late 20th century, likely from a specialized European or American studio glass producer (potentially Westmoreland or a similar company specializing in frosted or 'mist' glass). The quality is indicated by the precision of the metallic application and the depth of the color in the glass substrate.

I have carefully examined the provided images of this turquoise art glass plate featuring a metallic filigree overlay. The piece displays the characteristic 'Mist' glass finish with a complex, likely silver-deposited or electroplated bronze-tone overlay popular during the mid-20th century. Based on the craftsmanship and teal-satin glass composition, this appears to be a specialized production piece, possibly by Westmoreland or similar American/European decorative glass houses of the 1950s-1960s. The condition of the glass substrate appears excellent with no visible flea bites or thermal shock lines. The overlay shows a heavy patina consistent with age, which collectors often prefer over polished surfaces. Market demand for mid-century decorative glass remains stable, though value is localized to collectors of specific regional manufacturers. Comparables for standard mid-century overlay plates typically range from $75 to $150; however, the vibrancy of this specific seafoam hue and the completeness of the central mandala pattern elevate its desirability. A significant limitation of this appraisal is the inability to verify signatures or acid-etched marks usually found on the base, which could confirm a specific studio origin. I cannot definitively test the metallic content (e.g., sterling silver deposit vs. base metal) or check for micro-fractures within the translucent core without a physical inspection and UV light analysis. To finalize authentication, I would require a high-resolution photograph of the pontil mark or base and documentation of provenance to confirm it is not a modern reproduction. The current valuation reflects its high decorative appeal and presumed vintage authenticity.