Vintage OLDE Thompson hand crank coffee grinder/mill

Vintage hand crank coffee grinder. Wooden box with cast iron handle and gears. Using the grinder entails pouring roasted coffee beans into the bowl and turning the crank until they are ground. The ground beans fall through the bowl & gears into the drawer below. The gears are somewhat rusted. I believe they could be cleaned. I am assuming this makes a course ground. The box is all wood with dovetail construction. The gears and mechanism are cast iron. The bowl is possibly steel or aluminum. Box size: approximately 6.75" x 6.75" x 4.25" Marked on bottom: OLD THOMPSON COFFEE MILL, THE GEORGE S THOMPSON CORPORATION, 509 MISSION ST, SOUTH PASADENA, CALIF The Thompson Corp was established in 1944. Crslstby DS#201