Genuine Fred Puzzle, Wonders of Nature, 500 Piece, Complete. Includes poster and is stored in a slider bag inside the box. I purchased this new and built it one time before carefully putting it away in a zip top bag. Be sure to check out my other puzzles and save shipping by bundling up to 3 for only 1 shipping cost. I know how frustrating it is to get a puzzle that says it's complete and find out, when you're nearly done that, surprise, it's missing a piece. Argh...this recently happened to me, so I vow to ensure it doesn't happen to others.