If you can find another kubota that has the label more visible, take a picture with a good quality camera and go to a printer that makes adhesive backed labels. Then stick that label in some place that's visible. My buddy is a mechanic for Lamborghini and they don't like to put the actual license plates on the car because it requires making two bolt holes, so they make stick on labels out of the license plate and stick them on the back of the car. They're reflective so you can hardly tell it's not a real plate.
In most states that is a Felony.