Antique Bone Dice Lot: 13 Hand Cut Black Pips Vintage Gaming Two Sizes Folk Art For Sale

This is a lot of 13 antique/vintage bone dice with black inset pips in varying sizes. They appear to be hand-cut and hand-made, almost like folk art. They show considerable age. The natural material has visible grain, color variation and surface irregularities. They vary slightly in shape and dimensions, with some rounded/worn edges as well as scratches/marks/discoloration from age.
I am not an expert but am pretty sure these are made from bone based on the visible grain and porous characteristics. I am not sure of their exact age. They are being sold as-is and have not been polished or restored.
They measure between 10 to 13 mm.