Here is what a doubled die would look like:


Note on these devices, you can see the spread on the centers of the devices. On your coin you looking at the edges of the devices. That is where you see
Machine Doubling. Also the MD reduces the size of the devices. Note on the two images I posted? You can see the devices are enlarged and also notches on the corners of the devices.
Glare can hide MD, but inverting an image (Making it a color negative) show what the glare can hide.


Best if you are having issue with glare is to not make you lighting like a spot light on the devices. You can see under your glass, but taking a shot that shows the affected areas better is to move the coin to allow the light to fall over the devices and not be too strong so all we see is white on an area.