| Letter | Register Numbers From - To |
Machine Class (Model No.) |
Quantity Allotted | Date Allotted | Year Allotted | Notes | |
|---|---|---|---|---|---|---|---|
| ET- | 000001 | 011244 | 99K | 11244 | October 16 | 1961 | |
| ET- | 011245 | 061244 | 15K110 | 50000 | October 16 | 1961 | |
| ET- | 061245 | 061344 | 46K | 100 | October 16 | 1961 | Surj. |
| ET- | 061345 | 071344 | 221K | 10000 | November 2 | 1961 | |
| ET- | 071345 | 071844 | 81K | 500 | November 7 | 1961 | |
| ET- | 071845 | 072044 | 133K | 200 | November 13 | 1961 | |
| ET- | 072045 | 082044 | 201K | 10000 | November 15 | 1961 | |
| ET- | 082045 | 087044 | 128K | 5000 | November 15 | 1961 | |
| ET- | 087045 | 087344 | 133K | 300 | November 15 | 1961 | |
| ET- | 087345 | 157344 | 328K | 70000 | November 15 | 1961 | |
| ET- | 157345 | 167344 | 15K80 | 10000 | December 6 | 1961 | |
| ET- | 167345 | 167444 | 45K | 100 | December 6 | 1961 | |
| ET- | 167445 | 167494 | 47K | 50 | December 6 | 1961 | |
| ET- | 167495 | 167594 | 91K | 100 | December 6 | 1961 | |
| ET- | 167595 | 167694 | 132K | 100 | December 6 | 1961 | |
| ET- | 167695 | 167744 | 138K | 50 | December 6 | 1961 | |
| ET- | 167745 | 167844 | 172K | 100 | December 6 | 1961 | |
| ET- | 167845 | 168844 | 195K | 1000 | December 6 | 1961 | |
| ET- | 168845 | 169844 | 331K | 1000 | December 6 | 1961 | |
| ET- | 169845 | 179844 | 15K | 10000 | December 26 | 1961 | |
| ET- | 179845 | 179944 | 46K | 100 | December 26 | 1961 | |
| ET- | 179945 | 179954 | 16K | 10 | December 26 | 1961 | |
| ET- | 179955 | 180954 | 246K | 1000 | January 8 | 1962 | |
| ET- | 180955 | 184454 | 325K | 3500 | January 8 | 1962 | |
| ET- | 184455 | 185954 | 29K | 1500 | January 8 | 1962 | |
| ET- | 185955 | 186004 | 47K | 50 | January 8 | 1962 | |
| ET- | 186005 | 186104 | 91K | 100 | January 8 | 1962 | |
| ET- | 186105 | 186304 | 91K | 200 | January 22 | 1962 | |
| ET- | 186305 | 187304 | 246K | 1000 | January 22 | 1962 | |
| ET- | 187305 | 237304 | 328K | 50000 | January 22 | 1962 | |
| ET- | 237305 | 237504 | 91K | 200 | February 5 | 1962 | |
| ET- | 237505 | 237804 | 133K | 300 | February 5 | 1962 | |
| ET- | 237805 | 240804 | 196K | 3000 | February 5 | 1962 | |
| ET- | 240805 | 290804 | 15K110 | 50000 | February 16 | 1962 | |
| ET- | 290805 | 291804 | 195K | 1000 | February 16 | 1962 | |
| ET- | 291805 | 291824 | 6K | 20 | February 20 | 1962 | |
| ET- | 291825 | 301824 | 15K80 | 10000 | March 12 | 1962 | |
| ET- | 301825 | 351824 | 15K110 | 50000 | March 12 | 1962 | |
| ET- | 351825 | 356824 | 325K | 5000 | March 12 | 1962 | |
| ET- | 356825 | 357824 | 246K | 1000 | April 9 | 1962 | |
| ET- | 357825 | 358024 | 91K | 200 | April 9 | 1962 | |
| ET- | 358025 | 361024 | 196K | 3000 | April 9 | 1962 | |
| ET- | 361025 | 366024 | 331K | 5000 | April 9 | 1962 | |
| ET- | 366025 | 366324 | 133K | 300 | May 2 | 1962 | |
| ET- | 366325 | 369324 | 196K | 3000 | May 2 | 1962 | |
| ET- | 369325 | 370324 | 246K | 1000 | May 2 | 1962 | |
| ET- | 370325 | 375324 | 331K | 5000 | May 2 | 1962 | |
| ET- | 375325 | 425324 | 15K | 50000 | May 21 | 1962 | |
| ET- | 425325 | 426324 | 195K | 1000 | May 21 | 1962 | |
| ET- | 426325 | 476324 | 328K | 50000 | May 21 | 1962 | |
| ET- | 476325 | 526324 | 99K | 50000 | May 22 | 1962 | |
| ET- | 526325 | 576324 | 99K | 50000 | June 11 | 1962 | |
| ET- | 576325 | 601324 | 128K | 25000 | June 11 | 1962 | |
| ET- | 601325 | 601824 | 81K | 500 | June 26 | 1962 | |
| ET- | 601825 | 611824 | 15K80 | 10000 | July 17 | 1962 | |
| ET- | 611825 | 613324 | 29K | 1500 | July 17 | 1962 | |
| ET- | 613325 | 638324 | 128K | 25000 | July 17 | 1962 | |
| ET- | 638325 | 639324 | 246K | 1000 | July 17 | 1962 | |
| ET- | 639325 | 644324 | 451K | 5000 | July 17 | 1962 | |
| ET- | 644325 | 644334 | 16K | 10 | July 27 | 1962 | |
| ET- | 644335 | 644434 | 45K | 100 | July 31 | 1962 | |
| ET- | 644435 | 644484 | 138K | 50 | July 31 | 1962 | |
| ET- | 644485 | 645484 | 195K | 1000 | July 31 | 1962 | |
| ET- | 645485 | 695484 | 328K | 50000 | July 31 | 1962 | |
| ET- | 695485 | 695984 | 133K | 500 | August 14 | 1962 | |
| ET- | 695985 | 700984 | 331K | 5000 | August 14 | 1962 | |
| ET- | 700985 | 700986 | 707K | 2 | September 4 | 1962 | |
| ET- | 700987 | 701486 | 45K | 500 | September 11 | 1962 | |
| ET- | 701487 | 751486 | 99K | 50000 | September 11 | 1962 | |
| ET- | 751487 | 776486 | 328K | 25000 | September 11 | 1962 | |
| ET- | 776487 | 779486 | 246K | 3000 | September 11 | 1962 | |
| ET- | 779487 | 779986 | 45K | 500 | September 25 | 1962 | |
| ET- | 779987 | 781986 | 246K | 2000 | September 25 | 1962 | |
| ET- | 781987 | 786986 | 451K | 5000 | September 25 | 1962 | |
| ET- | 786987 | 836986 | 15K110 | 50000 | October 9 | 1962 | |
| ET- | 836987 | 838986 | 29K | 2000 | October 9 | 1962 | |
| ET- | 838987 | 888986 | 99K | 50000 | October 9 | 1962 | |
| ET- | 888987 | 889986 | 195K | 1000 | October 9 | 1962 | |
| ET- | 889987 | 890486 | 45K | 500 | October 9 | 1962 | |
| ET- | 890487 | 890506 | 16K | 20 | November 9 | 1962 | |
| ET- | 890507 | 900506 | 15K80 | 10000 | November 27 | 1962 | |
| ET- | 900507 | 900706 | 91K | 200 | December 10 | 1962 | |
| ET- | 900707 | 950706 | 99K | 50000 | December 10 | 1962 | |
| ET- | 950707 | 999999 | 328K | 49293 | December 10 | 1962 | |