Well the emblems were used on some of the demons with sport hoods. If you look at December 2011 Muscle car review page 16&17 the muscle car review, it shows Mr Norm standing with a demon picked up by Steve Green for a story published in may of 71. The Demon has the emblem and also the blackout without the border. So maybe towards the end of the 71 run they were using them along with a different stencil for the hood paint (i would bet that demon has a SPD after january), or maybe the emblem was used on vinyl top cars, or ones that had the rallye wheels or or....?????