NEW YORK (AP) ? The humble chair J.K. Rowling sat on while writing the first two books of the Harry Potter series was auctioned in New York City on Wednesday for $394,000. An anonymous private collector made the winning bid, Heritage Auctions said. The chair is one of four mismatched chairs given to the then little-known writer for her flat in Edinburgh, Scotland, and which she used while writing "Harry Potter and the Sorcerer's Stone" and "Harry Potter and the Chamber of Secrets."