A good vintage natural translucent Arkansas oil stone or razor hone.

This stone measures 3³/₄ inches (95mm) by 1⁵/₁₆" (33mm) by ⁷/₁₆" (12mm) thick.

The surfaces appear flat and smooth.

There is a small chip to one corner plus an obvious veining line to one surface, please see images.

Housed in a bespoke lidded wooden box.