Anti Aircraft Sight whats it

[wildernest]

Hello, I am new here and I hope I am doing the correctly if not I would just like to say sorry in advance. In my weekly flea market strolls I fould what I think is a anti aircraft sight. It has been floating around the cab of my truck til today when it made it in the house. I spent a little time trying to match it up with google images but found nothing. I guess that is how I ended up here in this foum. I attached a photo and it has a number on it that goes like this 7225186. Any input would greatly be appreciated.

Information

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[xa-coupe]

Looks like it is a Bofors or Oerlikon type of arrangement.

This is the best I could find.


No matter what it is, it is a very good curio .. not many people will have one I think !

[browningautorifle]

The base is wrong and the number sounds like the US NIN for that sort of thing...I thought Lewis at first but no way.