I purchased the MMF Industries Steel Cash Box a few months ago to secure our office petty cash. A definite upgrade from our flimsy old box, this cash box is made of heavy-duty, thick steel with a strong lock (like the kind on a good file cabinet), and a full-width piano-style hinge.
The removable tray's six recesses are 1.5" deep - perfect for a stack of bills and two layers of rolled coins. The box is 2" tall, with just enough room under the tray for large bills, receipts, coin wrappers, etc.
I like that this cash box fits perfectly in a desk drawer.