The Muse and her Minotaur, consists of 100 rare Picasso etchings documenting a love affair, and have been donated to a British Museum.
The etchings will be the only complete set held by a public museum in the UK.
The prints document the love affair that was to define an artist's career.
Now all 100 of Picasso's Vollard etchings are to be shown in London after being donated to the British Museum.
The prints were created as a visual diary of the artist's life with his young mistress and muse, Marie-Thérèse Walter.
She became the inspiration for some of his most famous work, and caused the downfall of his marriage.
Minotaur caressing a sleeping woman (June 1933). The black-and-white prints show dream-like scenes where Picasso often depicts himself in his studio as a Minotaur.
Blind minotaur led by a little girl in the night (Dec 1934). The prints were created as a visual diary of the artist's life with his young mistress and muse, Marie-Thérèse Walter
It is one of just a handful of complete collections of the etchings, which had an original print-run of more than 300 in the 1930s.
This will be the first set to be seen in Britain in more than 50 years as many other sets have been broken up or lost.
Sculptor working from life with model posing (March 1933). Marie-Thérèse, who was only 17 when they met, is also heavily featured posing mostly in the nude.
Portrait of Vollard II (March 1937). Right, Rembrandt and two women (Jan 1934)
Picasso and his secret lover conducted their affair for several years until his wife, Olga Khokhlova, found out and left in disgust.
The etchings, created between 1930 and 1937, will go on display at the museum in central London next summer.
A fund manager working in the City bought the prints for around 1million Euro as a gift for the museum, and told the curator of his generous donation via email.
The 100 etchings are known as the Vollard Suite because they were commissioned by Paris art dealer and print publisher Ambroise Vollard, who gave Picasso a Renoir and a Cezanne painting in exchange for the work.
Vollard gave the Spanish artist his first Paris exhibition in 1901.
But Vollard's death in a car accident, followed by the outbreak of the Second World War, delayed the release of the prints.
Maybe, I'm a hopeless romantic, but I love these black and white sketches. I love the mystery behind them and the creativity that comes from being in love, it adds to the artists ability to depict such dream-like beauty.
