I noticed this egyptian relief of sandal makers in the Archeological Museum of Florence. It dates from the 36-30th Dynasty, 664-343 BC. The round knife pictured in the middle has changed very little in the past 25 centuries. Below is a modern one that CS Osborne makes, which according to one web site has been the world’s best selling 5 inch round knife since 1826.
Peachey Conservation 
Jeff… of the three people, which one is you?
That thing would make a hell of a paring knife!