Norton 1000 Grit Waterstone 8"X3"X1"  Sharpening Stone #89506 USA!
Excellent used condition! Possibly never actually used?
see pictures for condition
The Norton Waterstone Single Grit Benchstone 1000 Grit is a high-quality sharpening stone made of silicon carbide, designed for metalworking and manufacturing purposes. This waterstone features a single grit of 1000, ideal for achieving a smooth and precise finish on various surfaces. Made in the United States by the reputable brand Norton, this benchstone is a reliable and durable tool for sharpening and honing metals with efficiency and precision.