But it is
Machine Doubling, not a doubled die. Note Pluribus on your images. note the
Machine Doubling on the tops of that device. That is
Machine Doubling on an incuse device. A doubled die would have the devices reduced in size on incuse devices:



Note the reduction on the incuse devices. That is what a doubled die would look like on incuse devices. On a doubled die on incuse devices would look like this:

Just like the image you posted. Not a doubled die, but
Machine Doubling.