AI Appraisal Estimate

This is a clear lead-glass drinking vessel, specifically a wine glass or goblet, featuring a conical or 'V-shaped' bowl. The construction is highlights the baluster style, characterized by a complex stem with a central knop, sometimes referred to as an inverted baluster or a cushion knop. The stem joins the bowl with a thick, heavy base and terminates in a wide, circular folded foot, which provides stability and is a hallmark of early Georgian glassmaking techniques. The piece appears to be hand-blown, evidenced by the slight irregularities in the glass and the presence of small 'seeds' or air bubbles visible within the material. The glass has a subtle greyish tint common in early lead glass. Regarding condition, the piece shows surface wear consistent with age, including faint scratches and what appears to be a small chip or inclusion near the base of the bowl. The foot rim shows some clouding which may be due to minerals or light calcium deposits. The craftsmanship suggests a mid-to-late 18th-century English manufacturing origin or a high-quality late 19th-century reproduction in the Georgian style. The lack of a visible pontil mark on the underside of the base (due to the camera angle) makes definitive dating difficult, but the bowl shape and stem knop are aesthetically aligned with late Baroque/Early Georgian glassware.

I have carefully examined the provided images and descriptions of this baluster-form wine glass. The vessel exhibits several characteristic features of early Georgian (circa 1720-1750) lead glass, most notably the inverted baluster stem, the conical bowl, and the labor-intensive folded foot. The presence of 'seeds' and a greyish tint indicates an early lead-oxide formula, while the surface wear on the foot rim suggests substantial age. The market for 18th-century English glass remains stable, with collectors prioritizing clarity, weight, and the complexity of the stem knops. While the 'V-shaped' bowl is classic, the lack of a visible pontil mark or a clear 'strike' sound—which I would normally assess in person—limits a definitive 18th-century attribution. If this is a late 19th-century 'heritage' reproduction (such as those by James Powell & Sons), the value sits at the lower end of the range. If fully authenticated as mid-18th century, it could exceed the top estimate at a specialized auction. The 'clouding' or mineral deposits noted on the foot can be detrimental to value if irreversible, as collectors prefer 'sickness-free' glass. However, the folded foot is a significant value-add, as it provided structural reinforcement and is highly sought after. Final authentication requires a physical inspection to: 1) Verify the hand-ground pontil or snap mark; 2) Perform a UV light test to check for the fluorescence characteristic of period lead glass; and 3) Weigh the piece, as period balusters are notably heavy for their size. Provenance documentation or a chemical analysis of the glass flux would further solidify its historical standing.