A RPM would be raised, not reduced by coin contact.






Machine damage on mint marks:




Flat shelf like reduction of the mint mark.

Note MD flattened the devices a bit. Note the normal example above it. The overall size is there, but also the reduction of part of the devices. The bottom of the devices are normal. A RPM would be enlarged, not reduced when compared side by side with a normal coins devices.
Note the enlargement of the mint mark on these one:










Machine damage on mint marks:




Flat shelf like reduction of the mint mark.

Note MD flattened the devices a bit. Note the normal example above it. The overall size is there, but also the reduction of part of the devices. The bottom of the devices are normal. A RPM would be enlarged, not reduced when compared side by side with a normal coins devices.
Note the enlargement of the mint mark on these one:

























