From the story by Fred Saberhagen, published by Tor Books, 1991.
An ancient Aztec mask is found, and Mike Gabrieli dares to wear it-it has inconcievable powers. He becomes a focal point of a time-traveling alien race, and 16th century Incas
Now, history, and present civilization are hanging in the balance, but Mike has an awesome weapon from the future, that can give him the advantage, and save earth...
Oil on masonite, 15" x 24"