I recently purchased a 25-Round magazine in excellent condition that is consistent with being produced during the WW1 era. It is a blued mag, two-toned (consistent with WW1 two toned mags), WW1 style follower, and it has a pinned base. I have found a little information that during WW1 there was an experimental 25 round mag and a small cage was placed on the right side of the 1911 to catch the brass. I also came across a forum talking about 25 round mags for 1911s being placed in aircraft for the crew before machine guns were placed in aircraft. I really don't know for sure what I have and I am having trouble finding anything. The gentleman I purchased the mag from said that he purchased some estate property and this mag was in an old military foot locker that he had to cut the lock off of. Can anyone help me?