Possible misprint or even a first pressing here. Notice both label matrices are JB504B, whereas on R. M. Blues / Rhythm Cocktail we find JB504A on the A label and JB504B on the B label.
Barcode and Other Identifiers
- Matrix / Runout (Both labels): JB504B
- Matrix / Runout (Runout etching, side A): JB 504-A
- Matrix / Runout (Runout etching, side B): JB 504-B