T-33:
If it were tail number 35951 in reality,
T-33A-5-LO
BuNo 53-5951, cn 580-9427
to MASDC Sep 16, 1975
But, you are correct, that tail number is a bogus number.
There is a photo (taken in 1992) of a T-33A with the 35951 tail number at:
http://www.abpic.co.uk/photo/1160783/
The registration is N533CB, c/n 580-7254, s/n 51-17463 per FAA ( http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=533CB )
N533CB per http://www.abpic.co.uk/photo/1160783/
Further, per http://www.joebaugher.com/usaf_serials/1951.html
51-17463 is c/n 580-7254,
However, that page incorrectly says 51-17463 (c/n 580-7284) to Belgium as FT-16. To civil registry as N533CB. That c/n should be 580-7254 not 580-7284.
So, the answer is:
Lockheed T33-1-LO
N533CB
c/n 580-7254
former 51-17463
Tail code on aircraft is bogus
Hope this helps,
Dean