Update:
Thanks to Miguel and a few commenters on facebook for tracking down the artist. Timba Smits illustrated this piece for Dunlop commemorating 100 years of the 24 Hours. Unfortunately I don’t see a print on his site, but you should absolutely head over there to see more of their beautiful work. Gorgeous.
I’ve seen a number of Pinterest members and eBay sellers calling this a 1950 LeMans poster. The Jag and Ferrari pictured here make that impossible.. But I can’t seem to find anything more about it.
It looks to me like a contemporary illustration meant to evoke the 50s. I’d love to credit the artist here and maybe get a print. Anyone know anything about it?