Queen's Metal, an alloy of nine parts [1] tin and one each of antimony, lead, and bismuth, is intermediate in hardness between pewter and britannia metal. It was developed by English pewtersmiths in the 16th century; [2] the recipe was initially a secret and was reserved for pieces made for the English royal family.
This article incorporates text from a publication now in the public domain : Wood, James, ed. (1907). "Queen's Metal". The Nuttall Encyclopædia . London and New York: Frederick Warne.