This is an Official Marvel Comics ONE OF A KIND original colorist art/color guide page used in the direct production of the vintage 1989 MIGHTY AVENGERS issue 301 comic book (Bob Hall, Tom Palmer). The Marvel Colorist for this 1980's color guide page is Christie Scheele (also known as Max Scheele). This is the ONLY color guide of this page in existence (it's 1 of a kind), and it was used in the production of the actual published comic book by Marvel's Production Staff.
This color guide art page shows Capt America, Thor, and Mr Fantastic and the Invisible Girl from the Fantastic Four.
NOTE: Color guide artwork is different from black and white original art. Color guides (colorist's artwork) are re-sized copies of the pencil and ink original artwork that are assigned to the issue's colorist, and then hand colored by that colorist. Colorguides usually measure about the same size as the published comic book, and some have "color codes" for the printers to follow. Because most modern comic books are now colored by using computers, there are no more color guide pages being produced, which makes the surviving color guide pages highly collectible.