These are steel Dies used to impress any particular design or advertising onto a sheet of metal to produce the handles for pocket knives.
One of the dies is recessed the other matching one is raised, a thin sheet of metal is placed between the two, and under pressure the metal is embossed to the design you see on these examples I have shown.
Most of these dies you may find are just simple line designs, but every once and a while you find some elaborately designed ones.
These examples are from a knife factory in Germany they date from 1910-1930 or so. One of them is of an old early airplane and there are hot air baloons in the background so you can get a rough date from the airplane. I will post that one later.
Unfortunately many of these were scrapped as they wore out or when defunct knife factories closed they were sold for scrap or thrown away. Nobody ever thought to save them for posterity. Needless to say very few of the really old antique handle dies exist today. It is amazing how these were hand cut to the desired design back then. Just look at the detail in the close up pictures, it must have taken quite a while to produce an exact set of these back then. Today they can probably produce these on a CNC machine in a matter of minutes?
If you look closely you can see the tool marks from the engraving process in the area outside the engraved design.
Anyone else out there have any of these?? I would like to see them, they never cease to amaze me
