Three boxed sets of letter openers, 20th century comprising a Christofle 'Napoleon Empereur' silver plated letter opener, a French Art Nouveau gilt bronze letter opener decorated with a pierced maize plant, initialled Ls, in a Chalmette fitted box, and a three-piece ivorine and blue enamel guilloche silver set, including a letter opener, nib-holder, and lead-holder, in a Drummond & Co stamped fitted case. Length: 22.5 cm and smaller