WARSAW: As fans worldwide mark 50 years since her untimely death, a collection of rare Marilyn Monroe photographs immortalizing America’s pre-eminent blonde bombshell have gone on display in Warsaw.

The candid shots of Monroe were taken by her friend Milton Green. They were obtained by Poland’s State Treasury as part of a collection of nearly 4,000 photographs it received as part of a settlement in a 1995 embezzlement case involving a U.S. businessman.

The collection also contains images of Frank Sinatra, Liza Minnelli, Marlon Brando, Judy Garland and Marlene Dietrich and is to be auctioned off later this year.

Monroe is snapped dressed in jeans fixing her lipstick and hair, eating a meal and coyly chatting on the phone in several photos, which will be on display until Sept. 6 at the Association of Polish Artistic Photographers on Warsaw’s Royal Castle square.

According to the association, some of the images of Monroe have never been seen before.

No date has yet been fixed for the auction, but Poland’s Treasury expects it to go ahead before year-end and hopes it will fetch upward of $680,000.

Some 300 Monroe fans gathered Sunday at the Los Angeles cemetery where she is buried, commemorating the iconic sex symbol on the 50th anniversary of her death.

The actress died on Aug. 5, 1962 from a barbiturate overdose at her home in the upscale Brentwood neighborhood.