I have designed a replica of the Radio Box in Fusion 360.
The Design is an almost exact copy of the original with the Box and Lid both interchangeable with the originals. There have been small design changes so the parts are better suited to 3D Printing.
If you do not have access to a 3D Printer Replica Radio Boxes are available to order for £25 + Shipping (discounts available for more than one box). A range of colour options are availabe.