SP S6 page: 1965 system renumbering
1965 Renumbering:
In late 1965, the SP began a program to renumber the majority of its locomotive fleet into a consolodated system without regard for reporting mark.
SP 1200-1257:
| 1965 numbers | Orig. numbers | notes |
| SP 1200 | SP 1033 | |
| SP 1201 | SP 1034 | |
| SP 1202 | SP 1035 | |
| SP 1203 | SP 1036 | |
| SP 1204 | SP 1037 | |
| SP 1205 | SP 1038 | |
| SP 1206 | SP 1039 | |
| SP 1207 | SP 1040 | |
| SP 1208 | SP 1041 | |
| SP 1209 | SP 1042 | |
| SP 1210 | SP 1043 | |
| SP 1211 | SP 1044 | |
| SP 1212 | SP 1045 | |
| SP 1213 | SP 1046 | |
| SP 1214 | SP 1047 | |
| SP 1215 | SP 1048 | |
| SP 1216 | SP 1049 | |
| SP 1217 | SP 1050 | |
| SP 1218 | SP 1051 | |
| SP 1219 | SP 1052 | |
| SP 1220 | SP 1053 | |
| SP 1221 | SP 1054 | |
| SP 1222 | SP 1055 | |
| SP 1223 | SP 1056 | |
| SP 1224 | SP 1057 | |
| SP 1225 | SP 1058 | |
| SP 1226 | SP 1059 | |
| SP 1227 | SP 1060 | |
| SP 1228 | SP 1061 | |
| SP 1229 | SP 1062 | |
| SP 1230 | SP 1063 | |
| SP 1231 | SP 1064 | |
| SP 1232 | SP 1065 | |
| SP 1233 | SP 1066 | |
| SP 1234 | SP 1067 | |
| SP 1235 | SP 1068 | |
| SP 1236 | SP 1069 | |
| SP 1237 | SP 1070 | |
| SP 1238 | SP 1071 | |
| SP 1239 | SP 1072 | |
| SP 1240 | SP 1073 | |
| SP 1241 | SP 1074 | |
| SP 1242 | SP 1075 | |
| SP 1243 | SP 1076 | |
| SP 1244 | SP 1077 | |
| SP 1245 | SP 1078 | |
| SP 1246 | SP 1079 | |
| SP 1247 | SP 1080 | |
| SP 1248 | SP 1081 | |
| SP 1249 | SP 1082 | |
| SP 1250 | SP 1083 | |
| SP 1251 | SP 1084 | |
| SP 1252 | SP 1085 | |
| SP 1253 | SP 1086 | |
| SP 1254 | SP 1087 | |
| SP 1255 | SP 1088 | |
| SP 1256 | SP 1089 | |
| SP 1257 | SP 1090 |
SP 1270-1281:
| 1965 numbers | Orig. numbers | notes |
| SP 1270 | SP 4634 | |
| SP 1271 | SP 4635 | |
| SP 1272 | SP 4636 | |
| SP 1273 | SP 4637 | |
| SP 1274 | SP 4638 | |
| SP 1275 | SP 4639 | |
| SP 1276 | SP 4640 | |
| SP 1277 | SP 4641 | |
| SP 1278 | SP 4642 | |
| SP 1279 | SP 4643 | |
| SP 1280 | SP 4644 | |
| SP 1281 | SP 4645 |