Frankly, my dear, we DO give a damn about this piece of Gone with the Wind memorabilia!

Heritage Auctions in Dallas, TX, is auctioning off a rare 251-page script from the 1939 classic featuring an alternate ending to the sweeping Civil War epic.

Seen as one of the greatest films of all time, the drama starring Vivien Leigh as Scarlett O'Hara and Clark Gable as Rhett Butler is also the highest-grossing in history, making an estimated $390 million at the time of it's release.

Warning: Spoilers ahead!

While the original ending shows a heart-broken Scarlett resolving to get on with her life after being left by Rhett, the alternate ending takes a different tone.

Instead of Scarlett spouting her famous last line, "After all, tomorrow is another day," she is much more distraught in the alternative one, crying out, "Rhett!…Rhett!…You'll come back. You'll come back…I know you will!"

According to the auction house, this is the first time a script with this conclusion has been put up for sale.

"In the original ending, Scarlett comes across as a strong, determined woman who will survive with or without Rhett, but this alternative ending is much more traditional — her life has been ruined because her man left her," explained Margaret Barrett, head of entertainment at Heritage.

"Scarlett is such an enduring character because she is so independent. She was way ahead of her time in terms of how women were viewed," Margaret added. "This alternate ending shows her life is going to be about getting Rhett Butler back whereas in the original she is sad to see him go but it's not the be all and end all."

The script is being sold by a private collector who used to own a book shop on Hollywood Boulevard. According to Margaret, "He has rubbed shoulders with lots of key Hollywood figures over the years and somehow ended up with this script."

While Heritage is starting the bidding at $500, they expect it could go for as much as $5,000.

The online auction ends on Aug. 23.