Kim, I too have those lovely P.A. inspection stickers! A few yearsago I actually put one over on a cop. I was going down the road to eat at the local Eat & Park. As son as I was getting out of the car, I hear "let me see your license and registration" I got out of the car and he told me that I had an expired stickers. We walked over to see them again and he looked and saw they were up to date! (I had the ones with the slash through the number). He had misread the number! BTW, this was a local cop not a state cop. This was the first time that I ever heard a cop apologize to someone! Boy, was I lucky!