I think your reasoning behind the 'O' is unlikely - given that all the
other stock was classified 'J' (Joint?). Why call your new pass cars
AJ, BJ, RBJ, JTA, JTB, JRA, JTA, then call the van P/CO? The SJ cars
were a reasonable classification (Sleeping 'J' car), ditto PCJ.
A further question on the joint stock cars - why are there J*A and J*B
cars? Both are first class.
Cheers,
Craig.
-- Craig Haber albatross@harnessnet.com.au Manufacturing Systems Engineer (almost) Web Page Designer, Harness Racing, Railways, and Essendon Football Club fanatic http://www.harnessnet.com.au/