The biscuit, taken by Sir Ernest Shackleton on his Antarctic expedition, sold for 1,250 Euro at auction.
The biscuit was one of thousands which were the diet for Shackleton and his companions on the 1907-1909 expedition.
According to his book "The Heart of the Antarctic," Shackleton's provisions included 600 pounds of ox and lunch tongues and 1,400 pounds of Wiltshire bacon to just name a few.
When polar explorer Ernest Shackleton handed a starving fellow traveller a biscuit on an expedition more than 100 years ago, his companion said he would not swap the morsel of food for "thousands of pounds."
Now one of the biscuits which nearly made it to the South Pole on the Anglo-Irish Shackleton's Nimrod expedition sold for £1,250 Euro (about $1,703.87) at auction.
Made especially for the expedition by British biscuit company Huntley and Palmers, the rations were fortified with milk protein to help the group on their arduous journey.
The explorers came to within around 100 miles (160 kilometres) of the pole but were forced to turn back and their return journey became a race against starvation, with the group surviving on half rations.
At one point Shackleton gave fellow explorer Frank Wild a biscuit from his own rations, prompting Wild to record in his diary: "Thousands of pounds would not have bought that biscuit."
Nicholas Lambourn, a director at Christie's, said the biscuits were designed to provide maximum stamina to the explorers but were far from perfect.
"They had a special recipe in an attempt to produce the right amounts of protein and carbohydrate," he told AFP.
"But they didn't understand the importance of vitamin C, they weren't perfect."
"It is an object that really catches the imagination," he said.
"We find there's institutional interest, there are museums around the world who want them for displays. There are also a lot of private buyers."