I had this in the back of my safe... It came along with an old M1 carbine mag pouch I purchased a while back. It looks kind of old, but I can't find any identifying marks on it.
It's too thin for M1 mags and too tall for any pistol mags that I have. If anyone can tell me what type of mag pouch this is I would greatly appreciate it!
Here are a couple of pics...
