| Letter | Register Numbers From - To |
Machine Class (Model No.) |
Quantity Allotted | Date Allotted | Year Allotted | Notes | |
|---|---|---|---|---|---|---|---|
| ER- | 000001 | 003033 | 188K | 3033 | March 1 | 1960 | |
| ER- | 003034 | 005033 | 451K21-25 | 2000 | March 9 | 1960 | |
| ER- | 005034 | 007033 | 451K125 | 2000 | March 9 | 1960 | |
| ER- | 007034 | 022033 | 128K | 15000 | March 9 | 1960 | |
| ER- | 022034 | 024533 | 222K | 2500 | March 15 | 1960 | |
| ER- | 024534 | 074533 | 185/192/99K | 50000 | March 17 | 1960 | |
| ER- | 074534 | 124533 | 15K110-191K | 50000 | March 17 | 1960 | |
| ER- | 124534 | 126033 | 246K | 1500 | April 8 | 1960 | |
| ER- | 126034 | 128033 | 451KSV21 | 2000 | April 14 | 1960 | 25K & 45K |
| ER- | 128034 | 178033 | 99/192/185K | 50000 | May 2 | 1960 | |
| ER- | 178034 | 193033 | 128K | 15000 | May 16 | 1960 | |
| ER- | 193034 | 208033 | 201K | 15000 | May 23 | 1960 | Alum. |
| ER- | 208034 | 223033 | 128K | 15000 | May 23 | 1960 | |
| ER- | 223034 | 273033 | 15K110-191K | 50000 | May 23 | 1960 | |
| ER- | 273034 | 278033 | 451K21-25 | 5000 | May 26 | 1960 | |
| ER- | 278034 | 303033 | 306K-319K | 25000 | May 26 | 1960 | |
| ER- | 303034 | 308033 | 331K | 5000 | May 26 | 1960 | |
| ER- | 308034 | 313033 | 196K | 5000 | May 26 | 1960 | |
| ER- | 313034 | 315033 | 246K | 2000 | May 26 | 1960 | |
| ER- | 315034 | 316033 | 81K | 1000 | May 26 | 1960 | |
| ER- | 316034 | 318533 | 222K | 2500 | May 30 | 1960 | |
| ER- | 318534 | 368533 | 185/99/192K | 50000 | June 16 | 1960 | |
| ER- | 368534 | 418533 | 15K110-191K | 50000 | June 21 | 1960 | |
| ER- | 418534 | 468533 | 192/185/99K | 50000 | July 21 | 1960 | |
| ER- | 468534 | 518533 | 15K110-191K | 50000 | July 21 | 1960 | |
| ER- | 518534 | 548533 | 306K-319K | 30000 | July 21 | 1960 | |
| ER- | 548534 | 550533 | 246K | 2000 | July 21 | 1960 | |
| ER- | 550534 | 555533 | 196K | 5000 | July 21 | 1960 | |
| ER- | 555534 | 560533 | 331K | 5000 | July 21 | 1960 | |
| ER- | 560534 | 575533 | 128K | 15000 | July 21 | 1960 | |
| ER- | 575534 | 580533 | 451K21-25 | 5000 | July 21 | 1960 | SV21 |
| ER- | 580534 | 582533 | 45K125-145 | 2000 | July 21 | 1960 | |
| ER- | 582534 | 583033 | 132K | 500 | July 21 | 1960 | |
| ER- | 583034 | 583038 | 47K | 5 | July 22 | 1960 | |
| ER- | 583039 | 593038 | 328K | 10000 | August 15 | 1960 | |
| ER- | 593039 | 743038 | 15K-191K | 150000 | August 15 | 1960 | |
| ER- | 743039 | 818038 | 99/185/192K | 75000 | August 15 | 1960 | |
| ER- | 818039 | 863038 | 128K | 45000 | August 15 | 1960 | |
| ER- | 863039 | 869538 | 188K | 6500 | August 15 | 1960 | |
| ER- | 869539 | 872738 | 195K | 3200 | August 15 | 1960 | |
| ER- | 872739 | 877032 | 196K | 4294 | August 15 | 1960 | |
| ER- | 877033 | 900032 | 320K | 23000 | August 15 | 1960 | |
| ER- | 900033 | 900042 | 707K | 10 | August 30 | 1960 | |
| ER- | 900043 | 902542 | 222K | 2500 | September 7 | 1960 | |
| ER- | 902543 | 904042 | 15K80-88 | 1500 | September 14 | 1960 | SV82 |
| ER- | 904043 | 922032 | 15K110-191K | 17990 | September 14 | 1960 | |
| ER- | 922033 | 923832 | 99/185/192K | 1800 | March 17 | 1960 | |
| ER- | 923833 | 955842 | 15K110-191K | 32010 | September 14 | 1960 | |
| ER- | 955843 | 956042 | 81K | 200 | September 14 | 1960 | |
| ER- | 956043 | 956242 | 45K | 200 | September 14 | 1960 | |
| ER- | 956243 | 956742 | 132K | 500 | September 14 | 1960 | |
| ER- | 956743 | 958742 | 195K | 2000 | September 14 | 1960 | |
| ER- | 958743 | 973742 | 201K | 15000 | September 14 | 1960 | |
| ER- | 973743 | 983742 | 331K | 10000 | September 14 | 1960 | |
| ER- | 983743 | 993742 | 451K21-25 | 10000 | September 14 | 1960 | SV21 |
| ER- | 993743 | 994242 | 133K | 500 | October 12 | 1960 | |
| ER- | 994243 | 999999 | 15K80-82 | 5757 | October 12 | 1960 | |