There are 3 different types of cases...
the earliest have a cloth organizer in the lid, the next had the lift out tray, then the latest models hainsides all tray attached to the inside with the pedal bracket in the lid. I will go look for some pictures.
This google image search shows most of the variations:
http://www.google.com/search?q=feath...=1024&bih=672#
Then if you google featherweight corduroy case you can see some better images of the early cases. Iwould post the link but for some reason it won't let me.