SCL 521
This loco was built in 4/1973 with EMD serial number 72785-22. She was built as a freight roadswitcher, model GP38-2 .
She became SBD 521 at the creation of the Seaboard System railroad.
She was renumbered SBD 2521 at some point.
She became CSXT 2521 at the creation of the CSX railroad.