Tester

An Illustrated Dictionary of Words Used In Art and Archealogy. · 1883 · p. 35

(1) Any flat canopy. The framework over a four-post bedstead. (2) A silver coin so called from the head ( teste ) of the king upon it. In the reign of Henry VIII. it was worth 12 d. and afterwards 6 d. French testers were struck by Louis XII. in 1513, and Scotch under Queen Mary in 1559.