Wish I could answer your question but at this point my spotting skills are somewhat under developed. However I did find some reference listings that may help. Diesel Detail Close-Up: GE C30-7 On the BN Model Railroading, Summer 1982. Page 44. Paint Shop: Painting a BN C30-7 Model Railroader, April 1985. Page 118. BN Painting Guide Mainline Modeler, July 1989. Page 26. BN's big brute: the C30-7 Model Railroader, January 1990. Page 130 Wish I could be of more help but possibly one of these may provide the answer you seek. Good Luck Bruno
