When I got the 1935 Kalamazoo recently, it had this case. Not sure if it's original to the instrument or not, but it definitely seems period correct. Have maybe seen this pattern before, but it's definitely not like the fake alligator one usually sees on these. Plus, the clasps are not marked. The stamped logo on the bottom and the raised diamond inside confirm it is a Geib. Oh, and the interior is much more purple than shown in the photos.
For posterity -
Bookmarks