We generally stock and build our products with Shell Cordovan from Horween out of Chicago. Wait times in between stocking can be long.
If you're interested in a more readily available Shell Cordovan leather, I have access to some quality Shinki Hikaku Leather from Japan. My current Horween Shell Cordovan is extremely limited, with only a little bit being available to me every 3 months or so. So if you're interested in receiving a Shell Cordovan product sooner, and with more color options, please contact me with what you're interested in.
Shinki Hikaku Natural Shell Cordovan
Shinki Hikaku Olive Green Shell Cordovan