This is an exceptional, highly collectible example of Early American Pressed Glass (EAPG) manufacturing from the late Victorian era. Produced by Riverside Glass Works (Wellsburg, West Virginia) circa 1894, this standalone kerosene lamp features factory Pattern No. 423, colloquially and formally known to advanced collectors as "Empress".

An investment-grade survivor, this piece showcases remarkably vibrant, original factory fire-gilded gold cold paint—completely untouched, unscrubbed, and in true as-found collector condition.

Sharing the same under-base design concept as its taller counterpart, this version features an intricate intaglio design molded directly into the underside of the foot. When viewed from above, the elegant Victorian women's profile portraits and trailing rose garlands showcase a remarkable, deep three-dimensional depth.

The reverse-molded underbase retains its original, bright factory fire-gilded gold cold paint decoration, which seals and highlights the intaglio work beautifully. Because the gold was applied on the reverse recessed side, it has been beautifully shielded from over-handling over the last century. The glass foot is completed by a crisp row of molded thumbprints (bullseye lenses) tracing the lower rim.

The clear glass font features clean vertical optique paneling and is structurally integrated with an embossed glass rim along the lower section of the base reading "RIVERSIDE CLINCH"—denoting Riverside's famous patented interlocking collar system designed to eliminate plaster degradation. The lamp comes equipped with a vintage period-correct brass Eagle burner and a clear glass chimney finished with a traditional beaded top rim.

Note to EAPG Collectors: We currently have a companion Riverside "Empress" under-base intaglio variant listed separately (the taller 11.75" version). We are happy to combine shipping if you wish to add both sizes of this beautifully preserved design line to your collection.

Origin & Age

• Manufacturer: Riverside Glass Works (Wellsburg, WV)

• Pattern Name: No. 423 "Empress" (Intaglio Base Variant)

• Country of Origin: United States

• Circa Date: 1894 (Late Victorian Era)

Material

• Body: Heavy Lead-Free Flint Glass / Clear Pressed Glass

• Hardware: Stamped and Spun Brass

• Decoration: Original Factory Gold Gilt Cold Paint Application (Underside Base)

Dimensions

• Height to Top of Burner: 10.75 inches

• Height with Chimney Installed: 17.0 inches

• Base Diameter: Approx. 5.75 inches

Condition Report

• Glass Structure: Excellent antique condition with outstanding clarity. There are no clouds, hazy residue, or water staining inside the font. The glass is free of structural cracks or chips along the thumbprint rim, stem, or paneling edges.

• Gold Gilt Paint: Exceptional survival state for an under-base intaglio application. The coloration is remarkably bright, vibrant, and complete with only minor, negligible pinpoints of age wear. It has not been chemically cleaned, scrubbed, or altered to preserve its authentic historical integrity.

• Hardware & Burner: The brass components show a beautiful, dark uncleaned antique patina. The collar is seated perfectly flush with the glass font. The Eagle burner threads securely, and the wick advancement thumbwheel moves freely.

Reference

• Book: Oil Lamps: The Kerosene Era in North America

• Author: Catherine M. V. Thuro

• Page Number: Page 243 (Illustrates the Riverside No. 423 "Empress" series and the specialized industrial manufacturing history of the embossed Riverside Clinch design).

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Item Description and Condition Disclaimer

We take great care in researching, identifying, and describing each antique item to the best of our ability, drawing on available resources and hands-on examination. However, as dedicated enthusiasts rather than professional appraisers or certified experts, we cannot offer guarantees on authenticity, age, origin, or precise valuation. We strongly recommend that buyers perform their own due diligence, including consulting reference materials or experts, and thoroughly examine the accompanying photographs. These images are an essential component of our listing and depict the item's actual condition, including any visible flaws, wear, or imperfections consistent with its antique nature. It is the buyer's responsibility to inspect each lot and form their own assessment on condition, description and authenticity before purchasing. All items have signs of wear commensurate with age and usage. The lack of statement regarding condition does not imply that the item is in perfect condition or free from any and all defects. If you have any questions regarding the condition of the items, please ask and we will be more than happy to answer and/or provide additional photos as requested.

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