HB31 on spine HB-31 on labels Rights Society: ASCAP Rights Society: P.R.S. (London) Matrix / Runout: 43231 (Labels sides A & B) Matrix / Runout: HB·31·A F/W ¢ [W over M] 43231-A (Runout etched side A) Matrix / Runout: HB·31·B [W over M] 43231-B (Runout etched side B)