This is how much Steve Jobs’ autograph is now worth

Steve Jobs did a lot of things in his lifetime: He co-founded Apple, he helped create one of the first mass-market personal computers and introduced the world to the iPhone and iPad, among his many accomplishments.

One thing he rarely did: Sign autographs.

As a result, Steve Jobs’ autograph is one of the most expensive in the world, worth nearly $51,000 or 40 iPhone Xs-es, according to an analysis from collectibles dealer Paul Fraser Collectibles. His autograph has skyrocketed in value since the year 2000, increasing 27.6 percent per year, thanks to his company’s iconic status and his early death. Still, that pales in comparison to the astronomical rise in Apple stock over the last 17 years.

But Stephen Hawking could give him a run for his money. A book autographed in full by the famed theoretical physicist, who died in March, doubled in value over the past year and is now worth roughly $38,000.

“Jobs was a reluctant signer, always maintaining that Apple was a team effort,” Daniel Wade, head writer at Paul Fraser Collectibles, said in the report. “Only a handful of genuine Stephen Hawking hand-signed books exist, mostly from the 1970s before Hawking’s illness made it impossible for him to write. You’re more likely to see Hawking’s thumbprint signatures, which are generally far cheaper.”

Other deceased individuals whose autographs are highly prized include actors James Dean, Bruce Lee and Marilyn Monroe.

As for the living, a photo featuring Paul McCartney’s John Hancock is the most valuable, worth $3,751. His bandmate Ringo Starr also has one of the most expensive signatures from a living individual, as do Prince William, Prince Harry and J.K. Rowling.

Comparatively, a photo signed by President Donald Trump is worth roughly $830 — but its value has increased 15.3 percent in the past year.

The values of all of these autographed items pale in comparison to the most expensive signature ever: George Washington’s signed copy of the US Constitution and Bill of Rights, which sold for a record $9.8 million in 2012.

That item was purchased by the Mount Vernon Ladies Association of the Union, a non-profit that maintains the Mount Vernon estate in Virginia that was Washington’s home.