Germany: E 11

The first 2 prototypes (E 11 001 and 002) are delivered.

Sources: https://de.wikipedia.org/wiki/DR-Baureihe_E_11

First batch of 40 units is delivered.

Compared with the prototypes, the fan grills on the side are arranged vertically and have rounded angles.

Sources: https://www.ttnut.com/germany-db-ag-and-private-railways-t871-50.html

The locomotives receive new registration: Class 211.

Sources: https://www.ttnut.com/germany-db-ag-and-private-railways-t871-50.html

The second batch of 54 units is delivered.

While the first batch had 4x double grills per side, the second batch has 6x single grills per side.

Sources: https://www.ttnut.com/germany-db-ag-and-private-railways-t871-50.html

Between 1985 and 1991, 22 units are reconfigured with different gear ratios so their performance parameters (top speed and tractive effort) were the same as Class 242.

But they were not quite identical (they still had different controls), so the reconfigured Class 211 units were registered as Class 242.3.

Sources: https://www.ttnut.com/germany-db-ag-and-private-railways-t871-50.html

69 units are still in service with German Reich Railways (DR).

Sources: https://de.wikipedia.org/wiki/DR-Baureihe_E_11

The locomotives receive new registration: Class 109.

Sources: https://www.ttnut.com/germany-db-ag-and-private-railways-t871-50.html

The remaining units are transferred to the new created German Railway Corporation (DB).

Sources: https://de.wikipedia.org/wiki/DR-Baureihe_E_11

The last 4 remaining units from Class 109 are taken out of service by the German Railway Corporation (DB).

Some units continue to be used by private companies.

Sources: https://de.wikipedia.org/wiki/DR-Baureihe_E_11