I ordered 2 Slim cases. 1 for my ESB FX-7 Proof Card & 1 for my 12 back R2-D2 card. I must say I am very impressed with them. Super thin & solid. Has a nice sliding bar just off the bottom to hold the card in & on the top rear, a nail hinge so it can be hung up on a wall.
As mentioned before, you can check Oscar's site out on his cases. You will not be disappointed.