I'm new to this as you can tell. I have recently acquired an Alfa. On the firewall, in the engine compartment, one plaque reads: "Guila GTC 10525" and another number below the first "3634". Stamped into the body in another location on firewall in engine compartment it reads "AR 755586" with a tag saying "Superleggera Touring 17137". Any assistance finding the year would be of great help. I have a title which tells me the serial number is 149500999 and that it is a 1957, but not sure.