I have owned 6 1972 RR and 4 were air grabber cars and none had the blackout behind the bubble. All the experts that i have talked to about this subject told me that every year the striping was different if you had V21. The 1971 RR with an air grabber was blackened out behind the bubble that was V21. 1972 RR with air grabber and V21 was like the above picture. Who is to say that some 71's might have slipped thru. Here is my 72 with V21 stripes.