| Letter | Register Numbers From - To |
Machine Class (Model No.) |
Quantity Allotted | Date Allotted | Year Allotted | Notes | |
|---|---|---|---|---|---|---|---|
| AT- | 000001 | 001000 | 261 | 1000 | January 19 | 1971 | |
| AT- | 001001 | 001500 | 302 | 500 | January 29 | 1971 | |
| AT- | 001501 | 017500 | 717 | 16000 | May 24 | 1971 | |
| AT- | 017501 | 032500 | 719 | 15000 | May 24 | 1971 | |