Just picked this up from a bin in which my father had several Arkansas stones (mostly smaller stones and sharpening kits). I'm visiting family and don't have time for proper research, but interested if anyone might recognize the stone or the stencil type labeling. It is about 6" x 2 " x 3/4", has inclusions and saw marks. Looks to have some sparkle in the sun and feels fairly fine to the touch.

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