441 Washington Line Pair Fake?

I am reviewing a number of my stamps and came across this 441 Line Pair. The Experts book says it is rarely faked, other than line pairs which sometimes are. Perfs gauge correctly, look good. Width is a bit short (.5mm), watermark OK, edges clean and straight. But when I look at the guidelines more closely they don't seem entirely straight or correct, and possibly not engraved, although I am not sure since this is my first time trying to validate a line pair. Any opinions?

Again, this is a seam line, not a guide line. The top perfs seem to have a problem, may be the picture.

Peter

It looks to be a good line pair. The top perfs are damaged due to a rough separation. Halves the SCV at best.