If the record doesn't have "SS RL" and "SS LH" etched in the run-outs then it is a repress - remastered at Atlantic, rather than Sterling Sound.
Around 200,000ish pressings were done of Robert Ludwig's 'high mix' which, like Hendrix's 'Ladyland' 1st masters, caused some poor-quality phonograph needles to 'skip'. Thus, a repress ordered by Ertegün at Atlantic.

Led Zeppelin – Led Zeppelin II

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• Lacquer Cut At – Sterling Sound
• Mastered At – Customatrix
• Pressed By – Columbia Records Pressing Plant, Terre Haute
• Manufactured By – Atlantic Recording Corporation
• Copyright © – Atlantic Recording Corporation
• Published By – Superhype Music, Inc.

• Artwork – David Juniper
• Engineer – Andrew Johns*, Chris Huston, Edwin H. Kramer*, George Chkiantz
• Executive-Producer – Peter Grant
• Lacquer Cut By – RL* (tracks: A1 to A4), LH* (tracks: B1 to B5)
• Performer – Jimmy Page, John Bonham, John Paul Jones, Robert Plant
• Producer – Jimmy Page
• Technician [Director Of Engineering] – Edwin H. Kramer*
• Written-By – Jimmy Page, John Bonham (tracks: A1, A3, B1, B4), John Paul Jones (tracks: A1, A3, B1, B4), Robert Plant (tracks: A1 to B3, B5)

• Rights Society: ASCAP
• Pressing Plant ID (Columbia Terre Haute, on labels): CTH
• Matrix / Runout (A side bottom label): ST-A-691671CTH
• Matrix / Runout (B side bottom label): ST-A-691672CTH
• Matrix / Runout (A-side runout etched [skinny "RL" etched next to a very small "ss"], variant 1): ST-A-691671-1A C12 RL SS T
• Matrix / Runout (B-side runout etched [very small "LH" etched next to a larger "ss"], variant 1): ST-A-691672-D A15 LH SS T |
• Matrix / Runout (A-side runout, variant 2): ST-A-691671-1A RL SS C2 T I
• Matrix / Runout (B-side runout, variant 2): ST-A-691672-D SS LH A5 o T I
• Matrix / Runout (A-side runout, variant 3): ST-A-691671-1A RL SS C1 T I
• Matrix / Runout (B-side runout, variant 3): ST-A-691672-D SS LH B14 o T I
• Matrix / Runout (A-side runout, variant 4): ST-A-691671-1B RL SS T
• Matrix / Runout (B-side runout, variant 4): ST-A-691672-D SS LH T
• Matrix / Runout (A-side runout, variant 5): ST-A-691671-1A RL SS B 13 o T
• Matrix / Runout (B-side runout, variant 5): ST-A-691672-D LH SS B 12 o T I
• Matrix / Runout (A-side runout, variant 6): ST-A-691671-1A RL SS C4 T I
• Matrix / Runout (B-side runout, variant 6): ST-A-691672-D SS LH o T I

PLEASE READ BEFORE BUYING-Thanks

All of our vinyl's have had a basic cleaning, tested and sleeved. LP's with any wavy streaks on them (Bag Rash) will need a deep cleaning to remove but bag rash doesn't effect playability. We use a None-Alcohol solution to clean to vinyl. We also wear gloves during the cleaning, testing and posting process to preserve the condition. All grading comments are visual so please refer to pics and video (if applicable) for your owe opinion on condition. We do try and take pics of any really noticeable marks. We handle the new Albums with the same care.

We do combine shipping on our LP's

Grading (Modified Goldmine Standard)

Mint (M): Absolutely perfect in every way. To qualify as Mint, a record must never have been played and is possibly still sealed. Mint should be used sparingly as a grade, if at all. Note that an item can be sealed and not Mint. (I do not use this grade very often)

Near Mint (NM) Excellent (EX): Nearly perfect. Near Mint (NM) vinyl has more than likely never been played. By its appearance, one would expect no imperfections during playback. The item should show no obvious signs of wear. The cover can have very minor defects, but it should have no folds, seam splits, scratches, or other noticeable defects. The same should be true of any inserts such as posters, lyric sleeves, etc. Many dealers won't give a grade higher than NM, implying (perhaps correctly) that no item is ever truly perfect. (NM is my top grade.)

Very Good Plus (VG+): The item will show some signs that it was played and handled by a previous owner who took good care of it. Any defects are of a cosmetic nature and affect playback minimally if at all. Surfaces may show some signs of wear, such as slight scuffs or very light (?hairline?) scratches, light bag rash and slight warps that do not affect the sound are okay. Paper products like sleeves will have some wear, slightly turned-up corners, or a small seam-split (less than 1/4?). In general, a VG+ record plays (nearly) perfectly and, if not for some minor aesthetic wear, it would be Near Mint. (I may use an additional + (VG++) to indicate a record exceptionally close to New Mint. A VG+ record will have no feel-able marks on it!

Very Good (VG): An items defects will be more pronounced. Surface noise will be evident upon playing, especially in soft passages and during a songs intro and fade, but will not overpower the music. Wear may start to be noticeable, noticeable bag rash, and light scratches on vinyl (deep enough to feel with a fingernail) that will affect the sound. Labels, covers, and sleeves may be marred by writing or have tape, stickers, and residue attached. However, a VG item will not have all of these problems at the same time. (I may use a - (VG-) to indicate a record very close to G+.)

Good (G), Good Plus( G+): An item in Good (G) or Good Plus (G+) condition can be played through without skipping, but it will have significant surface noise, scratches, crackling, or visible wear. Covers or sleeves will have scratches or seam splits, especially at the bottom or on the spine. Tape, writing, or other defects will also be present.

Poor (P), Fair (F): A record in this condition is cracked, badly warped, and won't play through without skipping or repeating. The cover could be cracked, water-damaged, and heavily marred by wear or writing. Cover and inner sleeves are fully split, crinkled, and written upon.