It looks like there were three sizes of ornaments for 47-53 and for 54-55. Most likely this is due to the three hood styles: (1) all small/medium/large trucks, (2) DD Double Duty - ?? Forward Control, delivery box van??, and (3) COE.
Your part number does not match any of the the part numbers in the Master Parts Book.
At this point, a photo or two and hole measurements might help to identify what you have. Maybe the ornament that was installed on your hood was not an original ornament.
