vintage USA pottery, big brown drip glaze mixing / serving bowls

Vintage brown drip pottery kitchen bowls - three 7 1/4" x 3 1/4" bowls in this lot. We're not sure who made this particular drip pattern, but they're nice and heavy, all in very good condition with very little wear or scratching. (That's dust in the sunlight making that thin line in the second photo - sorry!)