Notice on the 'O' on one on the bottom. That area is showing
Machine Doubling. How to tell, note how the device is reduced on the bottom of the devices. SO it one has MD, all the letters altered are probably
Machine Doubling. Note the left cornice roof area. Classic
Machine Doubling there. You are looking at the edges of the devices. A doubled die would show a spread:

Notice the lower image. Can you see the spread on the center of the devices. Don't look at the edges, look at the centers of the devices.