Just for interest I will throw out another idea. Kadee has offered
accurate models of NYC PS-1 box cars including their catalogue number
4057 (Lot 842-B with 5-panel Superior doors) and 4079 (Lot 808-B with
Youngstown doors). Both of these are sold out at Kadee, but you might
be able to locate one somewhere or wait for a future release that Kadee
will no doubt offer. These two models have black roofs and ends to
represent the car cement applied to new NYC PS-1 box cars built from
1950 to 1952. They also come with the correct hand brake and Apex
Tri-Lok running boards & brake steps.
Regards,
Ed Hawkins

These are the NYC models Ed mentioned, and a couple extras. As
Ed noted these are all PS-1 1950-1953 production.

4007 NYC 170699 IY doors, 1951 reweigh 1961
http://www.kadee.com/ca/40ps1/jpg/4007l.jpg
4032 NYC 169000 7p SUP doors, 1950 original
http://www.kadee.com/ca/40ps1/jpg/4032l.jpg
4033 NYC 169004 7p SUP doors, 1950 original
http://www.kadee.com/ca/40ps1/jpg/4033l.jpg
4034 NYC 169016 7p SUP doors, 1950 original
http://www.kadee.com/ca/40ps1/jpg/4034l.jpg
4057 NYC 180199 5p SUP doors, 1952 original black ends/roof
http://www.kadee.com/ca/40ps1/jpg/4057l.jpg
4079 NYC 170750 IY doors, 1951 original, black ends/roof
http://www.kadee.com/ca/40ps1/jpg/4079l.jpg
4084 NYC 170749 IY doors, 1968 stencil, jade green repaint
http://www.kadee.com/ca/40ps1/jpg/4084l.jpg

If you can find it, try to get Kadee #4000, the undecorated "RTR"
PS-1. The early undec models came with 3 different pairs of doors
but I don't know if the newer "kit" (#4100) comes with extra doors.
http://www.kadee.com/ca/40ps1/jpg/4000l.jpg
http://www.kadee.com/ca/kit/jpg/40%27exps.jpg

Tim O'Connor