Shell Cordovan coin/card case

That seems a very particular product. I don't know of anything like that for retail. I'm not sure who makes custom work with cordo, but Narragansett Leathers has worked for me in the past for regular calf leather. http://www.narragansettleathers.com/

Try these guys to see if they'll work with you:

FalerBrand
http://supertalk.superfuture.com/index.php?/topic/137715-falerbrand-leather-goods-made-in-ohio/

Blackacre
http://theblackacre.tumblr.com/

Hellbrand
http://www.hellbrandleather.com/

Unlucky
http://www.dontmournorganize.com/

I think you must have gotten spam filtered or something. Sorry about that. And sorry for raising an old thread, just thought I should comment for posterity. I'm sometimes too busy for new projects, but I respond to all emails.

Schmallo is spot-on with the alternatives, all of those guys do top-notch work in addition to being stand-up dudes.

Hey, that's my wallet!  I will tell you it's been excellent.  I can post photos tomorrow of just how nicely it's aged.

Here you go.