What the internet and you Marzocchi maniacs probably don’t know is, that Marzocchi rebuild the XC500 crown from about 1994 in the XC600 design. I believe they did it because of a product improvement (and continued with the design in XC600, XC700, XCR and DH3).
No joke, no fake. Just look at the picture!
I know about because over the years I had several n *100’s older Marzocchi fork in my hands and have found 3 – 4 of this crowns in my boxes. They are in absolut best condition!!