Sylvester Stallone’s ‘Holy Grail’ Watch Will Fetch Over $5 Mil, Expert Says

Sylvester Stallone is about to score a massive payday after putting his watch collection up for auction, because one of the timepieces could fetch a literal king’s ransom.

As you might have heard, the ‘Rocky’ star is selling 11 watches from his personal collection through Sotheby’s next month … and one crown jewel, in particular, has a watch expert going bonkers ’cause it’s incredibly rare (and damn expensive).

YouTube personality Nico Leonard van der Horst — who knows all things watches — tells TMZ … he simply can’t believe Sly is parting with his ultra-rare Patek Philippe Grandmaster Chime.

To us normies, it’s just a watch, but to van der Horst and co. … it’s the “Holy Grail.”

The Grandmaster Chime is one of the most complicated and exclusive wristwatches made — with just a small handful in circulation — and that’s why Leonard says it’ll go for well over $5 million, which is what it’s pegged to fetch once it actually goes up for sale.

The last time a Patek Philippe Grandmaster Chime was up for auction, it sold for a record $31 million. That was in 2019, and that one wasn’t owned by Rambo, which is why Leonard tells us this one from Sly will likely go for far more than the $5 mil estimate.

As for what’s so special about it … he gives us a sense of what it can do, and why it’s a collector’s item — and, apparently, it all has to do with functionality, anywhere in the world.

The other 10 watches include a separate Patek Philippe model expected to nab six figures, along with a 60th anniversary Rolex and several Panerai watches, one which Sly donned in 1996’s “Daylight.”

All in all, he’ll be cleaning up big time, especially for the Chime.