I wouldnt normally think a sterlingworth would find it's way into use by either of those agencies, but anythings possible. I have one thats been shortened, the one I told you about before. I still want to undertake some sort of project with it. Its about 21" in barrel lemgth. Is that one uncut? I personally think I would research that marking. If its not historically significant I would be tempted to restock it.