Obviously not a P7 guy (yet) came across one marked from 1983 (I believe) with an HKI Trussville, AL marking. Serial in the 6***** range. Does that make sense or didn't Trussville ones come later or am I confusing something here? Sorry for coming off so unknowledgeable but I am when it comes to these and I'm trying to make sense of some of the many posts on this. Thanks for any clarification.