LONDON — “It was smuggled. It belongs to Egypt,” said Magda Sakr, one of a dozen protesters gathered outside Christie’s auction house minutes before a stone head of the pharaoh Tutankhamen was set to be sold on Thursday night.

“I believe these things should be in a museum. They shouldn’t belong to one person,” added Ms. Sakr, holding a placard that read “Save Tutankhamen Head. Egyptian History is not for Sale.”

But despite protests from Ms. Sakr, and from Egyptian officials, the sale went ahead.

The brown quartzite sculpture of the god Amen, carved with the features of the pharaoh Tutankhamen during his brief reign, was the star lot of Christie’s annual “Exceptional” auction of trophy objects from across the centuries.

Dated by the auction house to about 1333 B.C. to 1323 B.C., and described as having a “particularly sensual” mouth, the head sold for £4.7 million pounds, or about $6 million, with fees. But competition was subdued. The lot attracted just two hesitant bids from anonymous telephone bidders.