[UN-1 8 + FOIL v.4] Not coated or backed with foil.

1

1640.  in Entick, London (1766), II. 165. Glass-plates, or sights for looking-glasses, unfoiled.

2

1731.  Phil. Trans., XXXVII. 155. The second Speculum may have a Part unfoil’d. Ibid. (1761), LII. 561. By reflexion from the unfoiled part of the speculum.

3