>>889295>>889299Some more info after some brief googling:
"The six former SP&S Passenger F's in series 9750-9760 had been withdrawn from revenue service in July 1972 and converted to rotary snowplow power plants 972550-L thru 972555-L. A power shortage beginning in early 1974 brought these units back to regular service. In April all six were sent to Dale Street shop for reinstallation of traction motors and renumbered back to 9750-9760. So hurriedly was the work done that the units retained their rust red MOW paint. Three of the group, (F3) 9750, (F7) 9758, and (F7) 9760 received BN logos and large numbers (like other F's) when they were returned to service."
All six of these units were assigned to Minneapolis Junction and worked the "Eastern F-unit Triangle" from Minneapolis and Superior west to Minot, ND for the remainder of 1974 and 1975. As part of the F-unit rebuilding program in 1976, all of these units were upgraded and returned to BN green. They continued in Twin Cities Region service until retirement in 1981.
F3 9750 became 710:2
F5 9752 became 712:2
F7 9754 became 714:2
F7 9756 became 716:2
F7 9758 became 718:2
F7 9760 became 722:2
Apparently the paint color is "mineral red."