Puzzle piece missing

I had many hours of joy doing the Coastal Town puzzle. Puzzle pieces are precious and I checked them every day. In other words, when the pieces fell of the table I swept the floor each time after working on it. I could see early on that a piece was missing from the roofing section and hoped it would turn up at the end. I have checked every nook and cranny. Is it at all possible that there was a piece missing. It is such a beautiful puzzle and I would love to keep it whole, take it for framing and put it on the wall. With the piece missing its not going to work. I wish it could be different. Is this typical or a unique experience?