A sampling procedure conducted by the English Royal Mint. The ceremony dates back to the thirteenth century. Typically, 100 golden guineas were randomly sampled and placed in a ceremonial box (the Pyx), which was then weighed. The Master of the Mint was responsible for the standard of the coinage. He was subject to severe penalties if the combined weight of the coins differed from its nominal weight by more than one part in 400.
Subjects: Probability and Statistics.