Hello, I am looking to get some information about a US&S 1911 that I have inherited. This gun was my fathers who I believe got it from his uncle. He either worked at US&S and acquired it or I believe he was in the service and possibly got it. He lived in swissvale,pa. I can't find this exact gun on any sites. It has the Union switch and signal, swissvale pa on the side, but that is the only markings that it has. No serial#, no "P", no rcd......nothing else. Anybody know what I have here??