What did Cecil Chubb buy at auction for £6,600 in 1915?

Sir Cecil Herbert Edward Chubb, 1st Baronet (14 April 1876 – 22 September 1934) was the last private owner of Stonehenge, which he donated to the British government in 1918.

Stonehenge was put up for auction in 1915 by the Antrobus family following the death, in World War I, of the only surviving male heir. Cecil Chubb's interest in the local area led to him attending the sale, with him bidding and purchasing Lot 15 on a whim for £6,600 (about £477,000/€563,000/$624,000 today), as he wished to avoid the stones being acquired by someone overseas. It is also speculated that he bought the stones as a present for his wife, only for her to be less than pleased with his new purchase.