You must be a police Cheif
Not WHO, but WHAT! Silver plate.
A Plaque
the plate number / license plate is 'une plaque d'immatriculation' in French.
sur la plaque
"une plaque d'immatriculation" is a registration number plate (for your car) in French.
An engraved metal or enamel plate which is affixed to a wall. Sometimes the plate is affixed to a wooden background which is affixed to the wall.
reverse search license plate numbers or talk to the police.
Report the license plate to the State Police
Home plate is in fair territory.
Any flat, thin piece of metal, clay, ivory, or the like, used for ornament, or for painting pictures upon, as a slab, plate, dish, or the like, hung upon a wall; also, a smaller decoration worn on the person, as a brooch.
Do you have a plate number? Any witnesses? Contact the local police and the DMV to trace the plate.
The license plate has number and says The first state. Why it has a number so that the police can find you if you did something bad.