Alex
That is an amazing pickup. I have a Stewart signature and that one certainly looks real. Who signed the cover? I can't really make it out.
It was also a relatively rare early F1 appearance for Andretti. about his fifth or sixth F1 race.
And it was one of the most amazing F1 finishes of he era (especially given the fact that passing is near impossible at Monaco)
Jochen Rindt (driving a Lotus 49, not the groundbreaking 72) trailed Jack Brabham until the very last corner when the three-time world champion basicially just missed a corner and allowed the young Austrian to pass.

See for yourself. Here, shockingly, is a very good video clip of the last lap.