As Spider-Man: Far From Home ramps up its marketing campaign, a recent tie-in promo for the upcoming Marvel Cinematic Universe film has hidden a subtle reference to Spider-Man co-creator and iconic comic book writer Stan Lee.

A tie-in promo for Audi and its new experimental electric car, the e-tron GT, has Peter Parker use his connections with S.H.I.E.L.D. to access the prototype from a top secret garage. The garage is sealed with a numerical access code which, at the 1:20 mark, Peter enters as 12.28.22.

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The seemingly innocuous six-digit code is actually Stan Lee's birth date, as a quick nod to the prolific Marvel writer and editor, who co-created Spider-Man and his amazing friends with Steve Ditko in 1962. Upon his debut, the superhero quickly became Marvel Comics' flagship character, adapted in various mediums over the past 57 years.

Lee himself has cameoed in every MCU film since the launch of the shared cinematic universe in 2008 with the original Iron Man. Lee has also cameoed in every single Spider-Man film in some capacity, including Spider-Man: Homecoming as an unassuming man living in Peter's native borough of Queens. Having passed away this past November, Lee is not expected to have a cameo in Far From Home, but will almost certainly be referenced somehow in the film.

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Opening July 2, director Jon Watts’ Spider-Man: Far From Home stars Tom Holland, Samuel L. Jackson, Zendaya, Cobie Smulders, Jon Favreau, JB Smoove, Jacob Batalon and Martin Starr, with Marisa Tomei and Jake Gyllenhaal.