There appears to be somewhat of a void of quality boxes CONUS but the Brits seem to have many more choices of quality boxes with quality leather. CONUS boxes say leather but more often they are vinyl.
The best quality box I own is a Steinhausen winder for 4 and 2 on display. My main box is a very large Chinese built box that has two drawers and a hinged glass top door that has 3 winders and 6 on display. The top drawer has 12 on display and the bottom has 13 PAMs carefully packed in there. There is a separate black leather box that has 6 TAGs and then there is the Underwood Single winder that holds my GEN AP dress watch.
I have been looking desparately for a real high end box for about 18 PAMS on straps, folded. My problem is that most all PAM boxes are just 6.75 to 7 inch cutouts while I need at least a 7.75 cutout due to a very large wrist.
So, no, the answer is that I do not know of a good source for a well designed box.