Two precious sculptures are among the prized pieces at Sotheby’s impressionist and modern art auction in New York.

The works by Alberto Giacometti and Amedeo Modigliani – are both from private collections.

Giacometti’s “Chariot” is a bronze sculpture of an elongated figure, on top of  a wheeled chariot. The 1951 painted cast piece has been in the same collection for over 40 years.

It’s estimated to sell for over $100 million.

Modigliani’s “Tete” was carved in 1911 and 1912 from a block of limestone which was scavenged from a Paris construction site.

The work has never appeared at auction – and comes with a presale estimate of $45 million.

The Sotheby’s sale is November 4th.