|Found these very small brass card pulls at House of Antique Hardware|
It's a hefty box with 7 1-inch drawers each holing the rectangular and round papers of each grade. Usually 60, 80, 100, 120, 150, 220, 600. A place for the sander, sanding block and a some odds and ends on top. The handle folds down. The drawer faces were cut from a single piece of salvaged Doug fir. The drawers glide on their bottoms into dado cut channels on the side
It still needs some drawer knobs (maybe?), but it's already functional and a big improvement.