I finally finished the second of two MTH AS-16's ( four wheel truck version of MTH's Baldwin AS-616 )
904 was built using a 16 Ga. (0.050 in) sheet brass chassis and RS-27 running gear, 900 was done with SW-8 switcher trucks and fuel tank, and RS-27 parts modified to work with the trucks.
The CNJ didn't have any AS-16's but did have a similar Baldwin RS-12 ( #1207 ) that was painted in the blue B&O styled scheme ( when they thought they might merge with the B&O )
(Allan Roberts photo.)