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The salesroom at Christie’s was packed on Tuesday evening, as spectators rubbernecked to see if buyers would compete for multimillion-dollar artworks at an auction house still hobbled by a cyberattack.

On Wednesday night, Elton John hits played over the loudspeakers as guests streamed into Christie’s Rockefeller Center salesroom, where auction house employees were decked out in sequins and feathers.

Then the competition exploded, with a half-dozen bidding paddles raised in the London salesroom, followed by a flurry of bids online and by phone.

Under Sotheby’s, the Breuer building at East 75th Street will include gallery and exhibition space as well as an auction salesroom.

However, the auction lacked speed, and there was consensus among some collectors and analysts in the salesroom that declines in speculative bidding and increases in interest rates were hurting business.