Concave enamel mirror, 1780-1820
Six and a half inch concave mirror of enamel (white glass or Tassies compound), by William Herschel, England, 1780-1820. Prescribed at back:- "no.8, 7 feet enamel mirror (F)" in cardboard round box ("Pl ) without lid, exact focal length 7ft, 3.25 in
- Object Number:
- 1925-462 Pt1
- type:
- components , concave mirrors and ceramic mirrors