If you are talking about the Machine Doubling on the incuse devices, this happens about 70% of the time. There are no doubled dies on this area of the coin. All the DDRs are on the central area of the design.
This is the target area for doubled dies on the ATB reverses
http://goccf.com/t/395236#3382655
This is the target area for doubled dies on the ATB reverses
http://goccf.com/t/395236#3382655























