I think your looking at minor Machine Doubling on the reverse. (note that all the areas your pointing to is in the same direction, reducing the size of the devices?) On the obverse all the devices are smaller than normal which indicates that the die was polished reducing the fields before your coin was struck. Just a normal die was was polished down before your coin was struck with slight Machine Doubling mostly on the corners of the devices. A doubled die enlarges the devices.
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