Thanks for the offer; but, I'm letting the people at RAL take care of this once again. They're in the process of collecting the pertinent information regarding cross-reference compatibility of the various registers for me. There's an old saying, "The nearer the church, the closer to God." Go to the source. Please don't tell me that RAL won't be of any assistance because they don't know about their own publications. Someone else here said nearly the same thing without providing any corroboration for his comment. Their archive researchers have been very helpful in providing information in the past.
Since you seem to believe I'm obviously talking out of my fifth point of contact and haven't a clue about this, maybe you'll give more credibility to the same conclusion made by Tom Cockle on this subject. Then again, you'll probably say he doesn't know what he's talking about either, right?
By the way, I'll throw you a bone. It's RAL 840 L
"Farbtonkarte fur Landmaschinen":
http://s239.photobucket.com/albums/ff149/SfanGoch/1941%20RAL%20Color%20Chart/
Can you provide the lumpen with anything other than RAL Classic or RAL C1 Digital 4.0 samples to peruse?