This spring, Huguette Clark’s collection of musical instruments, Gilded Age furniture and rare books will be sold at Christie’s. The trove of approximately 400 objects is expected to bring over $50 million and will be divided among two sales in May and June. Before the auction in New York, highlights from the collection will go on view at Christie’s London and then at various locations throughout Asia.

Huguette was the daughter of U.S. Senator and copper tycoon, William A. Clark. Beginning in 1930, Huguette led a largely reclusive life and when she passed away in 2011, she left behind an estate worth nearly $300 million. The proceeds from the upcoming auction will go to the estate, which will most likely be distributed between art institutions and distant relatives.

In 2012, 17 pieces of jewelry from Clark’s collection were sold at Christie’s including a rare pink 9-carat diamond that fetched approximately $21 million, nearly twice its pre-sale estimate.