AI Appraisal Estimate

This item is a circular cast glass coaster, characterized by a textured clear glass body with a raised relief design on the underside. The motif features a central cluster of grapes surrounded by large, detailed leaves with visible veining and jagged edges, characteristic of a vine or foliage pattern. The coaster has a smooth, shallow rim designed to contain moisture. A small, shield-shaped gold-toned sticker appears on the surface, which is consistent with the logo used by Dartington Crystal, though the text on the sticker is partially obscured and not fully legible in the image. The owner identifies this as a 'The Coaster FT332' designed by Frank Thrower for Dartington Crystal, made of 24% lead crystal; however, these specific claims remain unverified without physical testing and archival cross-referencing. The glass appears to have high clarity and a heavy, substantial thickness. The craftsmanship is consistent with late 20th-century British art glass manufacturing. No significant cracks or chips are visible, though minor surface scratches and adhesive residue from the label are stylistically expected for an item of this type and age. The attribution is hedged as identification is based on visual consistency with known patterns and the presence of an unverified label.

Based on my visual examination of the provided images, I have assessed this circular cast glass coaster. The item features a textured relief of grapes and foliage, consistent with the aesthetic of late 20th-century British glassware. Per the user submission, this is identified as the 'FT332' design by Frank Thrower for Dartington Crystal, reportedly composed of 24% lead crystal. While the coaster bears a gold-toned shield label similar to those used by Dartington, I cannot verify the specific text or lead content from a photograph alone. I treat the attribution to Frank Thrower as a working hypothesis. The estimated value of $15 - $30 is based on the assumption that this attribution is correct and that the item is a vintage production in good condition. Objects of this type are appreciated for their functional design and the reputation of the designer, though the market for individual coasters remains relatively modest. If this item were to be identified as a contemporary reproduction or a generic mass-produced piece 'in the style of' Dartington, the value would likely decrease to a nominal range of $5 - $10. A physical inspection would be required to confirm the density of the crystal, check for micro-abrasions, and clarify the markings on the label. To further support the identification, I would recommend cross-referencing the dimensions and casting patterns with archival manufacturer catalogs. General market interest in 1970s and 80s British glass remains stable, though value is heavily dependent on the presence of labels and the absence of surface wear. This estimate assumes the coaster is free of significant chips or restoration, which cannot be fully determined without a tactile assessment.