I will have to check my Am Pro Jazzmaster, but I'm pretty sure that's most eras of fender guitars with maple fretboards had the finish put on over the frets, and then buffed off the top. This is why many shops charge more for fender style maple fretboards. If it's a vintage fender, the frets were driven in from the side of the fretboard as well.Lark Street Guitars was recommended to me, but when I took my tele there to be refretted they would not do it. Because it was one of the Fender eras where they sprayed the poly OVER the frets.