AI Appraisal Estimate

This is a substantial Victorian-style oil lamp, likely dating from the late 19th to early 20th century. The lamp features a striking bright cerulean blue opaline glass font and base, constructed in a multi-tiered gourd or columnar silhouette. The glass is accented with brass-toned metal fittings, including a central band that joins the font to the pedestal. The lamp is topped with a large, frosted glass ball shade that features intricate etched or acid-etched floral and foliate patterns, including a shield-like cartouche. Above the globe sits a clear glass chimney, typical of functional kerosene or oil lighting. Physically, the piece stands approximately 20-24 inches tall. The craftsmanship displays high-quality glass blowing and precise metalwork. In terms of condition, the blue glass appears well-preserved with a high gloss, while the brass fittings show an aged patina and some surface oxidation consistent with age. The frosted globe appears intact, though close inspection for rim chips would be necessary. This type of lighting was often associated with high-end Victorian interiors, indicating a period of manufacture between 1880 and 1910.

I have examined the Victorian-style opaline gourd-form oil lamp through digital imagery. The piece exhibits the characteristics of high-end late 19th-century lighting, specifically the cerulean blue opaline glass popular circa 1880-1910. The gourd-form silhouette and brass-toned joinery suggest a European or high-quality American origin. Visually, the glass font and pedestal appear to be in excellent condition with no visible cracks, though the brass fittings show a desirable aged patina or oxidation. The acid-etched frosted globe is a significant value-driver; its ornate cartouches appear consistent with the period. In the current market, authentic Victorian oil lamps in decorative colors like cerulean blue command higher premiums than standard clear or white glass counterparts. Comparables for dual-tier opaline lamps with original or period-correct shades range from $800 to $1,500 depending on the manufacturer, such as Baccarat or Sandwich Glass. The primary limitations of this appraisal include the inability to inspect for 'bite' marks or rim chips hidden by the shade holder, and the inability to verify if the lamp has been electrified, which often reduces value for purist collectors. A physical inspection is required to check for manufacturer marks on the burner (e.g., Plume & Atwood) and to verify glass thickness and weight. To fully authenticate this item, a specialist should examine the threading of the burner and the presence of pontil marks on the base. Until provenance or maker marks are confirmed, this value represents a fair market estimate for an unsigned period piece in good decorative condition.