DT&I 406-424:
DT&I 406-413 - built 10/1972 - serial numbers 7359-1 thru 7359-8:
| DT&I 406 | DT&I 407 | DT&I 408 | DT&I 409 | |
| DT&I 410 | DT&I 412 | DT&I 412 | DT&I 413 |
DT&I 414-421 - built 10/1973 - serial numbers 73611-1 thru 73611-8:
| DT&I 414 | ||||
| DT&I 415 | DT&I 416 | DT&I 417 | DT&I 418 | DT&I 419 |
| DT&I 420 | DT&I 421 |
DT&I 422-424 - built 11/1979 - serial numbers 786215-1 thru 786215-3:
| DT&I 422 | DT&I 423 | DT&I 424 |