Model
Number
Heritage
Number
Notes
B23-7
NS 3970
Southern
3970F
B23-7
NS 3971
Southern
3971x
B23-7
NS 3972
Southern
3972T
B23-7
NS 3973
Southern
3973L
B23-7
NS 3974
Southern
3974J
B23-7
NS 3975
Southern
3975A
B23-7
NS 3976
Southern
3976W
B23-7
NS 3977
Southern
3977R
B23-7
NS 3978
Southern
3978K
B23-7
NS 3979
Southern
3979H
B23-7
NS 3980
Southern
3980A
B23-7
NS 3981
Southern
3981W
B23-7
NS 3982
Southern
3982R
B23-7
NS 3983
Southern
3983K
B23-7
NS 3984
Southern
3984H
B23-7
NS 3985
Southern
3985X
B23-7
NS 3986
Southern
3986T
B23-7
NS 3987
Southern
3987L
B23-7
NS 3988
Southern
3988J
B23-7
NS 3989
Southern
3989F
B23-7
NS 3990
Southern
3990X
B23-7
NS 3991
Southern
3991T
B23-7
NS 3992
Southern
3992L
B23-7
NS 3993
Southern
3993J
B23-7
NS 3994
Southern
3994F
B23-7
NS 3995
Southern
3995W
B23-7
NS 3996
Southern
3996R
B23-7
NS 3997
Southern
3997K
B23-7
NS 3998
Southern
3998H
B23-7
NS 3999
Southern
3999A
B23-7
NS 4000
Southern
4000R
B23-7
NS 4001
Southern
4001K
B23-7
NS 4002
Southern
4002H
B23-7
NS 4003
Southern
4003A
B23-7
NS 4004
Southern
4004W
B23-7
NS 4005
Southern
4005L
B23-7
NS 4006
Southern
4006J
B23-7
NS 4007
Southern
4007F
B23-7
NS 4008
Southern
4008X
B23-7
NS 4009
Southern
4009T
B23-7
NS 4010
Southern
4010L
B23-7
NS 4011
Southern
4011J
B23-7
NS 4012
Southern
4012F
B23-7
NS 4013
Southern
4013X
B23-7
NS 4014
Southern
4014T
B23-7
NS 4015
Southern
4015K
B23-7
NS 4016
Southern
4016H
B23-7
NS 4017
Southern
4017A
B23-7
NS 4018
Southern
4018W
B23-7
NS 4019
Southern
4019R
B23-7
NS 4020
Southern
4020K
B23-7
NS 4021
Southern
4021H
B23-7
NS 4022
Southern
4022A
B23-7
NS 4023
Southern
4023W