SP 6104B
This loco was built in 10/1947 with EMD construction number 4550. 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 to have been done away with when the F3 fleet was renumbered in late 1949. She was to have became SP 8008, but was sent to the T&NO and renumbered as T&NO 508 on 06/15/1949 prior to this number being applied.
She was rebuilt as an F9M at Houston and renumbered T&NO 710 in 09/16/1955.
She was retired on 12/04/1967 and sold to EMD on 12/27/1967.