This guy makes a heavy cad plated guard for the serial number on John Deere tractors. There were a few of these tractors painted to order made for county highway crews. The only difference is the paint color and the serial number - and the current value. Apparently there is a problem with people popping the Serial Number plate off a $15,000 highway tractor, painting a common $2000 green and yellow tractor the correct county highway colors, and switching the serial number plates. Go figure.
serial number plate on a John Deere 330
serial plate guard installed