Andy Warhol's Marilyn Monroe Painting Expected to Sell for $200 Million

One of the most famous Marilyn Monroe images, painted by the late great Andy Warhol, is going up on the auction block, and it's expected to set a pretty amazing record ... as in $200 million worth of amazing!!!

You heard that right ... Christie's auction house in London is putting the painting up for auction in May, and the expected 9-figure price tag would make it the most expensive piece of 20th-century art ever sold.

If things go the way Christie’s thinks it will ... the sale would top the value of Picasso's piece, "Women of Algiers," which fetched $179.4 mil about 7 years ago.

This particular Warhol is known as "Shot Sage Blue Marilyn" -- there are 5 other versions in this Monroe series, each in a different color.

It comes from a collection owned by Swiss siblings, and all the proceeds will go to their Thomas and Doris Ammann Foundation, which benefits children causes.

If the painting goes for $200 mil ... it will nearly double Warhol's previous auction record -- $105 million for a painting called "Silver Car Crash (Double Disaster)."

Already, the buzz about the Marilyn auction has brought back interest in all things Warhol, and his Netflix doc is trending again.