How do I date a french glass lamp base?

Examine the stylistic cues of the metal mountings and glass moulding techniques to determine the era. Art Deco pieces display geometric lines and stylized animal figures, while nineteenth-century items favour classical forms and heavy gilt-brass. Look closely at the materials used for the plinth, as marble and spelter combinations became particularly widespread during the nineteen-twenties and thirties.

Were these originally electric lamps?

Many smaller nineteenth-century and early twentieth-century examples started life as oil lamps or candle-burning photophores before undergoing conversion to electricity later on. Night lights and compact table lamps were frequently adapted to take modern wiring as domestic lighting evolved. Checking the internal fittings often reveals whether the lamp retains its original period hardware or received later electrical updates.

How should I clean opaline glass?

Use lukewarm water and mild soap with a soft cloth to remove dust from delicate opaline and frosted glass surfaces. Avoid harsh chemical cleaners that can damage vintage patination on surrounding brass or bronze mounts. Keep moisture away from the internal electrical components and older metal bases to prevent corrosion during cleaning.

What is spelter and how do I spot it?

Spelter is a zinc-based alloy commonly used as a cost-effective substitute for bronze in decorative lamp figures. It feels lighter than bronze and often shows a characteristic grey metal beneath worn areas of paint or patination. Many French figural night lights from the interwar period rely on spelter mounted onto polished marble bases.