I have a 1947 panel delivery ambulance by "Shop of Siebert". it was advertised as a 47, but the Seibert tag on the divider wall says "delivery date 1942". Where do I find the VIN or serial number to positively identify this vehicle? How do I determine weather this is a one ton or 1/2 ton? do I count the leaf springs? it has 16" wheels if that means anything. Pardon my ignorance, this is the oldest ford i have owned, only using the body, but would be nice to know what i have. Thanks in advance, Mark