
- Artist
- The Who
- Title
- Happy Jack
- Label
- Reaction 591010
- Country
- UK
- Released
- December 3, 1966
- Format
- 7", 45 RPM, Single, Mono
- Format notes
- Solid Centre
Runout and matrix codes
Etched or stamped in the dead wax between the last track and the label. If yours match, you have this pressing.
- 591010AA-side label
- 591010BB-side label
- 591010 A//8 1 1 ✲P✲Side A runout, variant 1
- 591010 B ▽ 1 1 3 4Side B runout, variant 1
- 591010 A//8 1 1 1 ✲P✲Side A runout, variant 2
- 591010 B ▽ 1 2 1Side B runout, variant 2