"Dr. Weldon Petz' peach pit carving by a prisoner of war during the War between the States (American Civil War) of the 1860s."
Further details and more examples at THIS LINK; credit to Growabrain.
Carved peach pits
"Dr. Weldon Petz' peach pit carving by a prisoner of war during the War between the States (American Civil War) of the 1860s."
Further details and more examples at THIS LINK; credit to Growabrain.