123:2
[ATSF/SPSF] slug
[B-B trucks] ATSF Oct78
[EMD Nov53 18942] ex-F7B 272B,
rblt/rnum to slug 123:2 Oct78,
rpnt to SPSF 123[:2] 31Jul85-24Jul86,
rnum to ATSF 1123:2 mid89,
rpnt to ATSF 1123:2 24Jul86-1Oct90 
rnum to BNSF 3964 with "BNSF" patch Mar00