This is an OFFICIAL MARVEL COMICS PRINTER'S PROOF PAGE used in the direct production of the 1992 X-MEN issue 16 comic book. Back
in the 1990's, Marvel's Production Staff couldn't have made the final
published comic book without this printers proof page.
This
page measures around the same size as the published comic book, and
proof pages sometimes have editorial staff markings on them, which is
completely normal for production artwork.
NOTE: Printers proofs are different from original comic art and colorist's artwork (color guide art). Much like original artwork and color guide pages, printer proofs were also vital in
the production of the actual comic book. Printer's proofs are usually xerox photo-copies created
by the production staff or by the printers for quality control purposes before printing
the actual comic books.