The Keeping Up With the Kardashians star secretly bid on - and won - one of Kennedy's Cartier timepieces at a Christie's auction, more than tripling the $120,000 price tag the watch was expected to bring in.
An engraving on the back reads, "February 23, 1963", which TMZ points out was months before her husband John F. Kennedy's death.
The timepiece was a gift from the former first lady's brother-in-law, Prince Stanislaw "Stas" Radziwell in 1963.
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There are also looking for documents and information about whether the FBI investigated the communication. Chuck Grassley (R., Iowa) announced Friday.
While JFK and Jackie didn't personally participate in the hike, they organized friends to take part in the challenge in Palm Beach. Refreshments, including champagne and steak, were offered after the hike. After the White House published the memo, many Americans chose to hike 50 miles to see whether they were as fit as U.S. Marines in the early 1900s. The watch doesn't stray from her plan ... it has no diamonds and the design is actually understated.
In addition to the watch, a painting that Jackie made of Radziwill and Spalding completing the walk was offered along with the watch.
"It's not to say that I'll never wear jewelry again or anything like that", Kardianshian had explained during an appearance of Ellen DeGeneres Show after her Paris experience, according to People magazine.
"I know this sounds insane, but I know that was meant to happen to me", West said during her guest appearance on The Ellen DeGeneres Show.