this is a plain FORD truck, ford grills go up and down and were painted , Mercury trucks have Chrome grills and they run side to side.. Mercury trucks say Mercury on the hood trim, with the size of the truck .. Plus mercury trucks say Mercury on the dash, 1946-47 mercury trucks have this body but different grills and trim , One way to tell the year is the spare tire loction , if its on the drivers side or not.. if this is a half-ton the rear fenders are worth gold.