Slide & Box Knives, early 19th century
Oooh, knives with secret compartments! I'm not sure what these are for, exactly. I think they are quite small, they look like tiny penknives, so nothing big could fit in the box. Smelling salts? Cocaine? Who knows.
Image from the book Explanation or Key, to the various manufactories of Sheffield, with engravings of each article, designed for the utility of merchants, wholesale ironmongers, and travellers (Sheffield, 1816) [x]
















