- Artist
- Led Zeppelin = Led Zeppelin
- Title
- Untitled = レッド・ツェッペリン ＩＶ
- Label
- Atlantic P-8166A
- Country
- Japan
- Released
- 1971
- Format
- LP, Album, Stereo
- Format notes
- Gatefold
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.
- P-8166A1Side A label
- P-8166A2Side B label
- P - 8166A - 1 / 7 - C - 7 / ITY / 1 [circled]12 o'clock / 6 o'clock / 9 o'clock / 4 o'clock
- P - 8166A - 2 / 1 - A - 96 o'clock / 12 o'clock
- Logo 〄Stamped both sides
- P-8166A-1 ITZ 1-A-10A-side runout stamped - Variation 1
- P=8166A-2 1-D-9B-side runout stamped - Variation 1
- P - 8166A - 1 / 1 - C - 4 / 1 T X / 1 [circled] / 〄6 o'clock / 12 o'clock / 3 o'clock / 10 o'clock / 9 o'clock
- P - 8166A - 2 / 1 - B or D - 312 o'clock / 6 o'clock
- P-8166A-1 ITXY 7-A-2 〄 ①Runout Side A, Variant
- P-8166A-2 7-A-5Runout Side B, Variant
- P-8166A-1 2ITZ12 1 - A - 10 〄 ①Side A Variant
- P-8166A-2 1 - A - 0 〄Side B Variant
Other Japan pressings of Led Zeppelin IV
- 1971Atlantic P 8166 ALP, Album, Test Pressing
- 1972Atlantic P-8166ALP, Album
- 1973Atlantic P-8166ALP, Album, Reissue
- 1973Atlantic P-8166ALP, Album, Reissue
- 1976Atlantic P-10125ALP, Album, Reissue, Stereo
- 1976Atlantic P-10125ALP, Album, Reissue
- 1976Atlantic P-10125ALP, Album, Reissue, Stereo
- 1976Atlantic P-10125ALP, Album, Reissue
- 1976Atlantic P-10125ALP, Album, Reissue, Stereo
- 1979Atlantic P-6519ALP, Album, Limited Edition, Reissue, Stereo
- 1988Atlantic 16P1-2026LP, Album, Reissue
- 1992Atlantic AMJY-2003LP, Album, Reissue