Aragorn243,
The case looks good to me. I only question such bold print of the Tweedies marking with the other wear of the case. Maybe someone tried to embellish it some?
I have some cases that were extended and will hold a Garand. They don't appear to have started out as a carbine case. The reason I say that is because the carbine case has the sewn on end piece at a certain spot. On the extended one the case is longer at the barrel end before the end piece went on. So I think it was designed to be longer from the get go. Not taking a carbine case, unstitching the shorter end piece and sewing on a longer one. Or it really had a different purpose all together but worked with a Garand so people use it that way.
Jim