These were assorted railroad MTH RDCs and they were relettered by SIRT using custom made (at my instigation) by Toms Trains in Westfield, NJ.
Did all 11 of the CNJ #s.
Using MTH RDCs, you have to make sure you get only the smooth end versions...earlier RDCs from MTH had ribbed detail going around the front...which CNJ did not have.
Am very happy with SIRT's work.
Walter M. Matuch