SP 6139B
This loco was built in 02/1949 with EMD construction number 7104. It was built as a 1500 hp F3 B-unit. It was painted in the SP's standard for the time black widow colors.
Her alpha suffix was done away with when the F3 fleet was renumbered in late 1949 as she became SP 8078.
She was retired on 07/21/1966 and sold to EMD on 08/01/1966.