Are these lamps converted from oil?

Many nineteenth-century examples began life as oil lamps or bronze vases before conversion to electricity. Later twentieth-century pieces were manufactured specifically as electric desk and table lamps. Conversion methods vary, but skilled rewiring ensures the pieces meet modern safety standards while retaining their original aesthetic.

How do I date a figural lamp?

Dating relies upon the stylistic markers of the figure, such as the geometric lines of Art Deco or the flowing motifs of Art Nouveau. The casting material and the nature of the base also offer clues to the period of manufacture. Signatures or foundry marks stamped into the bronze help identify the specific artist and active decade.

What is the difference between bronze and spelter?

Bronze is a durable copper alloy that takes fine detail and develops a rich patina over time. It forms heavy, valuable sculptures and lamp bases. Spelter is a softer, lighter zinc-based metal that mimics bronze visually. It was widely utilised for decorative table lamps during the early twentieth century.