The coin that Ford spins and then gives to Caffery is an Eisenhower dollar coin, but the coin they claim they pulled a print from is not even a dollar coin. It is a Kennedy half dollar coin.
When Ford is first shown in the truck, his head is turned to the left but in the very next scene he looks straight ahead with his hand on his mouth.
When Neal finds the plate for the bills, the design is how you would see it on currency, but in reality, when the design is on the plate, it should be reversed so that it looks backwards.
The plate for the $100 bills only has the front of the bill. When Caffrey prints the bills, only the front is ever shown.
Even if someone rubbing their fingertips with a pumice stone every day would allow them to leave no fingerprints, it would make it extremely difficult for that person to hold things securely -- a major inability, especially in a thief. Friction ridges (the correct name for the patterns on fingertips) are so called because they produce the friction necessary to allow the reliable grasping of objects.