Why is it called a butler's mirror?

Historical servants used these wide-angle glasses in dining rooms to keep watch over multiple tables and guests simultaneously without turning around. The curved reflection allowed staff to anticipate service needs across the room from a single stationary position.

Are these mirrors actually from the Regency period?

The selection includes genuine Regency items alongside later 19th century and early 20th century revivals that imitate the earlier aesthetic. Examining the construction methods, backing boards, and wear on the gilt surface helps distinguish original Regency pieces from later revivals.

How do I clean convex glass?

Wipe the curved surface gently with a soft, lint-free cloth and mild cleaning solution applied to the cloth rather than directly onto the glass. Avoid pressing too hard against the centre of the glass, as older plates can be fragile within their frames.