Antique Victorian Spring-Loaded Brass Candlesticks - Pair of Functional "Eternal" Candle Holders with Filigree Crowns - c. 1890-1915

Own a fascinating piece of mechanical history with this pair of authentic Victorian-era spring-loaded candlesticks. Designed to provide a constant flame height, these "eternal" candle lamps were a revolutionary late-19th-century invention commonly used in churches, chapels, and for carriage lighting.
Key Historical Details:
Era: Late Victorian to Early Edwardian (Circa 1890–1915).
Mechanical Innovation: Features a fully functional internal spring mechanism. As the candle burns, the spring pushes the wax upward, ensuring the wick remains at a consistent height—perfect for use behind glass hurricane shades.
Authentic Markings: The bases feature cast-iron weights with original foundry stamps, including model numbers "B71", "39", and the maker’s mark "AL", indicative of high-quality early 20th-century brassware.
Design: Ornate reticulated filigree crowns at the top, originally designed to vent heat and support glass shades, paired with heavy, weighted circular bases for maximum stability.
Condition:
Excellent Vintage Condition. Both internal springs have been tested and are fully operational. The solid brass exhibits a rich, warm, naturally aged patina. No significant dents or damage; original hardware is intact on the underside.
Dimensions:
Height: 7.5 inches and 7.75 inches 
Base Diameter: 4.15 inches
Weight: Approx. 2 lbs each
How to Use
Unscrew the ornate filigree crown.
Insert a standard taper candle into the spring-loaded tube 
Screw the crown back into place.
Light the candle; the spring will automatically advance the candle as it melts!