Marilyn Monroe's love letters among never-before-seen personal items up for auction The Lost Archives of Marilyn Monroe will go under the hammer December 5 and 6 in LA Actress' favorite coat expected to fetch at least $120,000 One letter is from Joe DiMaggio begging her not to divorce him There's a letter from Joe DiMaggio begging her to come back to him following their separation; an intense love note from Arthur Miller, a message from Cary Grant, and even an old prescription pill bottle from a pharmacy in Bedford. Over 200 rare personal items of Marilyn Monroe's that have never been seen by the public will go up for auction in Los Angeles next month. The collection of belongings - which also includes her supposedly-favorite black coat, circa mid-1950s, photographs and other memorabilia - were until now kept by her mentor and coach Lee Strasberg, who died in 1982. Each item will go under the hammer separately at Julien's Auctions Beverly Hills gallery on December 5 and 6. Private collection: Over 200 personal belongings of Marilyn Monroe will go up for auction in Los Angeles on December 5 and 6 Intimate: The collection gives a rare insight into the life of the late screen goddess Personal: Among the items is a prescription bill bottle from a pharmacy in Bedford, New York For Miss Monroe: Numerous phone messages that were taken at the Beverly Hills Hotel Insightful: This letter was written to Monroe by Joe DiMaggio after she announced she wanted a divorce. In the letter the baseball star begs for his wife not to leave him Bling: The belongings, such as this necklace, were left to mentor and coach Lee Strasberg, who died in 1982 'We are all in awe of this opportunity to offer such a rare collection and glimpse into Marilyn Monroe's life,' said Martin Nolan, Executive Director of Julien's Auctions. 'You can't help but get emotional on several levels when you have the chance to read the letters and view some of the photographs and witness Marilyn's own attempt at correspondence.' The collection is a strange glimpse into the late screen goddess' private world. Arguably the most insightful item is a letter from Joe DiMaggio, written after the baseball star learned his wife wanted a divorce. Monroe made the announcement during a press conference in 1954, nine months after their wedding. 'He writes this amazing letter, beautiful handwriting, very impressive,' Nolan told CCTV. But his first and foremost number one concern was he truly loved Marilyn, but he was concerned for her welfare, he felt she looked as though she was about to collapse. 'He didn't like to see her crying. And then he expressed his love, he expresses his regret and apologies if he had anyway hurt her. And he is begging her to come back to him. So it's a true love letter.' The most expensive item at the auction is said to be Monroe's favorite - a coat she wore consistently in the mid-1950s. The piece originally sold as part of her estate in 1999, but is expected to fetch at least $120,000. Favorite: This coat is said to have been Monroe's go-to and she wore it consistently The auction will include love letters, photographs, personal items, personal records and documents and other memorabilia Classic: A three-panel sterling silver custom-made Cartier frame, gifted to Marilyn Monroe by Nedda and Joshua Logan. Inside is a picture taken by Cecil Beaton in 1956, along with a letter from him describing her 'My darling': One of many love letters sent to Monroe by husband Arthur Miller Autograph: This slip is believed to be from an item Monroe bought at an auction Nude: This painting of Monroe was done by Earl Moran, believed to be dated 1946 'My Darling, my darling, my poppy': This is a note Monroe was writing back to Arthur Miller but never finished Next month: The auction will be held at the Julien's Auctions Beverly Hills gallery, located at 9665 Wilshire Boulevard, on December 5 and 6