It maybe very minor Machine Doubling. Note the overall size of the other devices around it? It is not wider or enlarged. It is the same overall size. The slight Machine Doubling (sometimes happens when the coin is ejected from the chamber touching the a die) damaged the coin in that area. It can happen on one or more devices. If it were hub doubling, it would have involved more devices (usually)equally. Here is an example of ejection doubling:






















