Master list of matrixes
https://www.discogs.com/forum/thread/386878

IFPI Codes:
http://home.lyse.net/bki/met/ifpi-codes.html

Common runout groove etchings: how to list them (Version 5)

https://www.discogs.com/forum/thread/386878?utm_campaign=user-mention&utm_medium=email&page=65&utm_source=relationship#7283881

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Pressing Plant Numbers:
6 = All Disc Records, Inc.
56 = Columbia Records Pressing Plant, Pitman
60 = Sound Makers
73 = Columbia Records Pressing Plant, Terre Haute
25 = Columbia Records Pressing Plant, Santa Maria
70 = RCA Records Pressing Plant, Indianapolis
72 = PRC Recording Company, Richmond, IN
26 = PRC Recording Company, Compton, CA
16 = Sonic Recording Products, Inc. / Goldisc Recording Products, Inc.
18 = Presswell
19 = Bestway Products Inc.
22 = Allied Record Company
24 = Monarch Record Mfg. Co.
30 = Plastic Products
49 = Specialty Records Corporation
53 = Keel Mfg. Corp. (prior to '79); Hauppauge Record Manufacturing Ltd. ('79 and later)
54 = Shelley Products
76 = Hub-Servall Record Mfg. Corp.
74 = Electrosound Group Midwest, Inc.
28 = Rainbo Records

LABELS

Record company codes (the letters after "ST")

A = Atlantic Records
C = Atco
CAP = Capricorn
CTN = Cotillion Records LPs
CO = Cotillion Records 45s
FC = Famous Charisma
SS = Swan Song
AS = Asylum
MC = Manticore
RS = Rolling Stones Records
HT = Hilltak Records
IL = Island Records

Pressing Plant Codes for LPs:

PR = Presswell Records Mfg. Co., Ancora, NJ (they handled most of Atlantic's LP's during much of this period)
LY = Shelley Products, Huntington Station, NY
SP = Specialty Records Corp., Olyphant, PA
MO = Monarch Record Mfg. Co., Los Angeles, CA
PL = Plastic Products, Inc., Memphis, TN
RI = Philips Recording Co., Richmond, IN
AR = Allied Record Co., Inc., Los Angeles, CA
CT or CTH = Columbia Records Pressing Plant, Terre Haute
CP = Columbia (Pitman, NJ)
CS or CSM = Columbia (Santa Maria, CA; very infrequently)
BW = Bestway Plastics, Mountainside NJ
SO = Southern Plastics
MG or MGS = MGM Record Mfg. Division, Bloomfield, NJ
FT = Fidelatone Mfg.

LP label matrix example: (Led Zeppelin I)
ST-A-681461-MO

ST = stereo
A = Atlantic Records label
68 = last two digits of the year Atlantic first received source (tape) and started working on mastering
1461 = tape master number (for side one in this example)
MO = Monarch Records pressing plant

London Records label matrix suffix:
AL - Allentown Record Co.
P - Columbia, Pitman, NJ
TH - Columbia, Terre Haute, IN
SM - Columbia, Santa Maria, CA
SH - Shelley Products, Ltd., Huntington Station, NY
BW - Bestway Products, Inc., Mountainside, NJ
GL - Decca/MCA, Gloversville, NY
K - Decca/MCA, Pinckneyville, IL
PH - PRC (formerly Philips) Recording Corp., Richmond, IN
W - H.V. Waddell, Burbank, CA

Columbia "360 Sound" Label Progression
1962 - 1963 Black "360 SOUND STEREO 360 SOUND" (no arrows)
1963 - 1965 Arrows were added on either side of "360 SOUND"
1965 - 1970 White "360 SOUND STEREO 360 SOUND"

Warner Bros. Label Progression
Mono:
1958-62 - Grey label, black WB Shield, WB in gold print
1962-65 - Same, but in white print
1965-67 - Gold Label

Stereo:
1958-67 - Gold label
1968-70 - Green Label, Warner Bros. - Seven Arts Records. W7 logo under that.
1970-73 - Green Label, Warner Bros. Records. w/ WB Shield
1973-78 - "Burbank" Label
1978-83? - White or beige label w/ Narrow horizontal lines -OR- ghost WB shields in background
1983?+ - White or tan label, no lines, large WB shield

● Capitol Records label progression (pdf file)●

OTHER SCRIBINGS IN THE DEADWAX:

22, 33, 44, 66 etched = pressed by All Disc Records, Inc.
AT = Mastered at Atlantic Studios
AT/GP (handwritten) = mastered by George Piros at Atlantic
AT/DK (handwritten) = mastered by Dennis King at Atlantic
ATLANTIC STUDIOS DK (stamped) = mastered by Dennis King at Atlantic
ABS = Alex Sadkin
ab or AB = Abbey Record Manufacturing Co., Inc.
⍺ʙ = Al Brown (5)
BDI or B.D.I. = Brian Ingoldsby
EDP [in oval] = Europadisk Pressing & Mastering
Ⓕ = Fidelatone Mfg.
PR or PRC or (PR) = Philips Recording Company, Inc. (prior '73) PRC Recording Company, Richmond, IN (10/72)
LW or LWP = Longwear Plating (maker of metal parts from lacquers) Enter as "Mastered At"
♡POGO = Keith Olsen's Pogologo, Inc. (Productions)
Porky or Porky Prime Cut = George Peckham
Pecko Duck = George Peckham
sƒ = Sam Feldman
RL = Bob Ludwig
LB = Larry Boden
LH = Lee Hulko
"ɑ" looks like Q = Allied Record Company (usually followed by B-#####)
MG = MGM Records Division in Bloomfield, NJ (Pressing)
AMP = ABC-Paramount
𝒜ℛP = American Record Pressing Co.
M = Mercury
MR = Mercury Record Manufacturing Company
RCA = RCA Victor
◈-P-◈ = MCA Pressing Plant, Pinckneyville
回-G-回 = MCA Pressing Plant, Gloversville ⧈-̶G̶-̶⧈
◎—∈—◎ = MCA Records (Canada)
G or G1= Columbia Records Pressing Plant, Carrollton, GA
✲ or ☆ (prior to '64) = Capitol Records Pressing Plant, Los Angeles
Lathe similar to ☖ (prior to '64), IAM in triangle = Capitol Records Pressing Plant, Scranton
—◁ = Capitol Records Pressing Plant, Winchester
RG = Rob Grenell, mastering engineer for Atlantic in the late 60's
GK = Gilbert Kong
"cg" + "☮" = Chris Gehringer
GF = Greg Fulginiti, of Artisan Sound Recorders
◵ graphic of a disc and radius gauge for the A in Artisan Sound Recorders
R3 or R4 = Mastered at Rainbo Records (on Capitol Pressing)
︵︵〰༼ -(birds) or メ or ❀、= Brian Gardner
DT = Dave Travis
DC, whereas D is incorporated into the top of the C (usually associated with Masterdisk) = Dave Crawford (2)
RJ = Ray Janos
AZ CB = Chris Bellman at Allen Zentz Mastering
JG = John Golden
JJ = John Johnson (3)
SM = Stephen Marcussen
MF = Mike Fuller
BK = Bill Kipper
McM = Ron McMaster at EMI NY
SH = Steve Hall
H.W. = Howie Weinberg
TJ = Ted Jensen
RB = Ron Boustead (Precision)
SG = Steve Guy
Chet = Chet Bennett
RAYS = Ray Staff at Trident Studios, London
JG♡ = Joe Gastwirt
TLC = The Lacquer Channel
FW Ѽ or FWNY = Frankford/Wayne Mastering Labs
GOL = Goldisc Recording Products, Inc.
SON or Son = Sonic Recording Products, Inc.
CSB ♪♪ = Carlton Batts (usually with F/W)
PP = Plastic Products
TD = Terry Dunavan
ESR = Elektra Sound Recorders
GC, ℊc, ☆ or ⚾ (Baseball looking symbol) next to Sterling = Greg Calbi
Ƨ = Columbia Records Pressing Plant, Santa Maria
ELA (followed by delta#) = Electrosound Los Angeles
ℰMW = Electrosound Group Midwest, Inc.
WM (W integrated atop M stamp) or (ᵛᵛ) = Wakefield Manufacturing
⋐riteriɑ = Criteria Recording Studios
ʙʟ⍂ɪʀ or ʙʟ△ɪʀ = Chris Blair (mastering)
dg = David Gold (3) (Gold Star Studios)
HERbiE :^) = Herb Powers Jr. (mastering)
⁄|⁄ǀ⁄|⁄ǀ⁄|⁄K = Randy Kling (mastering)
WMℰ = Mack Evans
ℐ⍺ = Jack Adelman
DWJ = Darrell Johnson
ACR = RCA Records Pressing Plant, Smiths Falls, Ontario
ℰcK = Ralph Eck
¢ = Tom Coyne
SMK (etched) = Sound Makers
THE WASP = Martin Birch
TS = Tommy Simmes
WSS = Woodland Studios
SJR = Stuart J. Romaine
TSM or TƧM (looks like TZM) = True Sound Manufacturing Corp.
US⦾ = United Sound (3)
m w/ T rising from atop, similar to ⭄ = Mastertone Studio

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