Samuel Blatchford, Worthington v. Robbins — Opinion of the Court
“ If it were to be classed as 'watch materials,' it would follow that any metal which could ultimately be used, and was ultimately used, in the manufacture of a watch, but could be used for other purposes also, would be dutiable as 'watch materials.' In order to be 'watch materials,' the article must in itself bear marks of its special adaptation for use in making watches. ”
