My 1999 Orion Bluebook lists two types of H3aa, the first is a dual mono pair made from 78-82 orig.retail 700, still showing a mint value of 460.00. The second H3aa listing is for a mono pair (not dual) made from 76 thru 80, original retail 1,000, still had a book value of 620.00 for a mint pair in 1999. Regards
Don Burner
Don Burner