First post here.
Here's the Mann I picked up recently, serial 11547-21. The magazine is original, though the feed lips are warped and cause the follower to shoot up through the top. If I load any cartridges the magazine unfortunately jumps right out.
Just to test it out, I bought a new magazine from Triple K, though they gave me a 6 week lead time. I probably won't be trying to repair the original, since this gun will wind up in a display eventually.
For size comparison. That gift card is the size of a credit card.