| Year | Cutting Style | Ignitions Key | Ignition Keys notes | Door & Trunk keys | Model Notes |
| 1968 | Single Sided | X31 | Chipless | || | || |
| 1969 | Single Sided | X31 | Chipless | || | || |
| 1970 | Single Sided | X31 | Chipless | || | || |
| 1971 | Single Sided | X31 | Chipless | || | || |
| 1972 | Single Sided | X31 | Chipless | || | || |
| 1973 | Single Sided | X31 | Chipless | || | || |