The sign from the Four Seasons restaurant in New York has sold for $96,000, smashing an estimate of $7,000 by 1,271%.
The bronze sign was created by illustrator Emil Antonucci and stood at the entrance to the restaurant.
Wright hosted the dedicated sale in the restaurant's famous Pool Room on July 26.
The Four Seasons was designed by Mies van der Rohe and Philip Johnson and has long been considered a great icon of modernism.
It opened in 1959 and quickly became one of the city's swankiest destinations. In 1989 it was designated an interior landmark by New York City's Landmark Preservation Committee.
It closed its doors this July and will reopen at another location on Park Street later in the year.
Meanwhile, a pair of Mise van der Rohe-designed Barcelona ottomans sold for $18,000, up 157.1% on an identical valuation of $7,000.
A pair of matching chairs pulled off a similar feat, realising $17,000.
Both lots sat in the lobby opposite the staircase that led up to the Grill Room.
Almost everything from the restaurant was up for grabs, with a set of four matching ashtrays selling for $10,000.
The restaurant's reputation and location in midtown Manhattan made it a popular destination for the super-rich, hence the spectacular sums paid for the keepsakes.
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