An art collection worth a reported $600 million is currently being appraised for sale, and includes several works from renowned Pop Art icon Andy Warhol. Art dealer Ileana Sonnebend, who passed away in October last year, is having her prised collection broken up by his heirs in order to pay outstanding taxes on his estate.

The $600 million is an estimate of her collection’s worth from her lawyer, Ralph Lerner.

Not all of the collection will be sold, they are planning to break the collection down and sell just two groups, one including several works from Andy Warhol and the other including various Pop art works for the sixties.

The buyer has yet to be named but Lerner expects the works to be on public display once the sale has gone through.

Sonnebend was instrumental in launching the careers of many of the 20th century’s best know artists, including Warhol himself.