The Prop Store’s Aug. 26 and 27 virtual auction — the company’s first event from Los Angeles — features over 850 items from classic films, including props, memorabilia and costumes from movies like “Raiders of the Lost Ark,” “The Godfather Part II,” “Hook,” “The Hunger Games” and “Rocky.”An 11-foot model miniature of the Nostromo that was used during the filming of “Alien” has the highest pre-auction estimate ($300,000-$500,000).