How do I identify a true period lamp?

Examine the construction methods, casting weight, and wear patterns on the bronze and ormolu components. Nineteenth-century examples typically show hand-finished chasing and heavy cast metal parts. Compare the wiring holes and interior fittings with known manufacturing standards of the period. Later reproductions from the 1920s or 1930s often use different assembly techniques and lighter metal alloys.

What is the difference between bronze and spelter?

Bronze is an alloy of copper and tin that yields a heavy, durable material capable of retaining sharp casting details. Spelter is a softer, zinc-based alloy used as a cheaper alternative for decorative figures and lamps. Spelter feels lighter in the hand and is more prone to surface cracking or bending. Bronze maintains structural integrity and accepts fire-gilding and patination much more effectively than spelter.

How should I clean gilt bronze and ormolu?

Dust the metal surfaces gently with a soft, dry brush or microfiber cloth to remove everyday particles. Avoid abrasive polishes, water, or chemical cleaners that can strip the delicate gilt layer from the bronze underneath. If the piece requires deeper conservation, seek a professional restorer who specialises in historical metalwork to prevent damaging the original patina.