It turned out to be a rare high-back wing chair from a famed Danish furniture designer. The chair just sold at a Sotheby's auction for over $100,000.

He suspected the high-back wing chair would only be worth “a couple thousand” due to its “rough” condition — there were holes in the leather upholstery and discoloration.

Images of the "rare high-back wing" chair dating back to the 1930s. Miller told Newsweek that he bought it on Facebook Marketplace for $50 before it was sold for $85,000 at a Sotheby's auction.

Produced in 1935, the Henningsen high-back wing chair that Justin Miller bought for a pittance and sold for a fortune is vintage — but in 12 years, it will become an antique.

Cassina has reissued and adapted a chair designed by Danish architect Bodil Kjær in the 1950s that provides the "perfect position to unwind".