Can I clean the antique glass safely?

Use a soft, dry microfibre cloth to remove dust from the glass and frame without applying liquid cleaners directly to the surface. Moisture can seep behind degraded seals or damage vulnerable gesso and gold leaf. If cleaning fluid is necessary, apply a minimal amount to the cloth rather than the mirror plate.

How do I identify the period of a frame?

Examine the construction methods visible on the reverse, such as hand-cut screws, timber species, and panel joins, alongside stylistic indicators like Rococo asymmetry or Regency reeding. Wear patterns on the underlying gesso and the oxidation style of the mirror plate provide further clues to age.

Are original mirror plates common?

Many older pieces retain their original glass, which often exhibits characteristic minor distortions, tiny bubbles, and light silver degradation known as foxing. Replacement plates do occur when earlier glass suffered terminal breakage over the centuries. Inspect the edges of the glass for bevels and thickness to understand its history.