Looks like the best place to find out a bit more about my Kalamazoo Mandolin:
There is no serial number on the back of the head stock, just the wording "Made In The U.S.A.":
And inside there's a sticker saying "Made in U.S.A. by Gibson, Inc., Kalamazoo, Mich.":
The tail end:
I would really appreciate it if any of you could tell me a bit more about this instrument, when it was built, if it is any good, etc.
I bought it at a flea market here in The Netherlands a year ago and since then I've started playing it for a bit, it's a nice sounding instrument really.