Mecum Lot S115-DY LS6 trim tag opinions

[DW31S]

I've never seen a tag with only one number referring to the color (s). I have a good friend that had a '70 442 that was Sebring Yellow--also code #51 and also an extra-cost option. The weird thing about this particular car was that on all other '70 Oldsmobiles I have ever seen in that color, including the Rallye 350s, the trim tag had the dashes instead of the #51. This car was a California build and absolutely had the #51 present---the first, last, and only one I've ever seen with the tag in that manner.
I'm not saying the tag on the LS6 is good or bad or real or fake; merely adding what I know.