I know that in early Velove models the "F" was stamped on the fore wall above the model and chassis number...is that true for later models...lioke from 1964 on...or for the 101 models
You are correct in that the Veloce cars came with an F, G or E (sprint) stamped into the firewall either above or into the chassis number. When the 1018 car came out it was a special run of numbers and didn't require the additional letter designator. The 1600 Veloce spider ran from 390001 to 391091 for a total of 1090 cars. You can see the 1600 Veloce Register here.