Db7 chassis numbers
According to my Bonhams DB7 to One-77 guide, The DB7 V12 started @ 300003.
Mine is an April 2000 registration and the chassis Nr is 3006xx. Was on a W plate then V12 plate and now and Irish 00 plate - no glamour here though on the registration plates!
If you know the Chassis number then the Bonhams guide gives a bit of detail about the car.