The 4 I ordered arrived today. None were marked, which is not a big deal to me. I just got finished taking them apart and cleaning them. You will need to do this as they are filthy. Prior to cleaning, I would guess that 2 were unused. Two were lightly used. One appeared to have been "serviced" and when reassembled the floor plate was deformed and would not lock in. Not a big deal, couple taps with a brass hammer and all is well. The other lightly used one appears to have been at the bottom of the pile in a damp box. A little bit of rust visible on the outside, once I got the floor plate off, there was quite a bit more rust on the inside. Pretty much all surface rust except the very bottom of the spring. It was heavier there, but still not close to rusting through. After cleaning up the rust, inside and out, I found a small dent in one side. After putting it back together I found it did not hinder movement of the follower.
I am happy with the purchase and will order some more. They are in very good condition for the most part, but are very dirty from being stored in less than optimum conditions, likely since about the time Isreal stopped using them.
Edit. Tried putting more in my cart on two different devices. Got an error code each time. Although it didn't list them as OOS, could be the issue I guess. Oh well.