divided egg plate, vintage brown drip glaze pottery Harker rawhide?

This is in very good condition without damage, just a few light mineral deposits to the surface as shown. (We haven't soaked this, or cleaned it with anything more than a very mild dishwashing soap.)

It would work well with a lot of different brown drip pieces, we think... we're not sure of the maker, but are guessing this is Harker pottery piece?