Russell Working, a journalist who interviewed Permyakov more than 20 years ago, told AFP that the elderly interpreter had no idea of its value when he pulled the timepiece from his drawer.
"To have this one surface all of a sudden after all these years, it was like a treasure chest washing up on the beach," said Working, who was part of the auction house's research team.
Another item on auction was a red paper fan, inscribed with a poem by Puyi "dedicated to my comrade Permyakov". That fetched more than $77,800 -- six times its pre-sale estimate.