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Identification & grading help — not a valuation. These tools decode catalog numbers and estimate condition. They never identify the exact pressing run or assign a dollar value — scan a record in the app for that.

Goldmine Grading Scale & Catalog-Prefix Reference

Two collector essentials in one place: the Goldmine condition grades and the catalog prefixes that tell you a record's label and format. Print it or keep it open while you dig. No values here.

The Goldmine grading scale

GradeNameWhat it means
MMintAbsolutely perfect, typically still sealed and never played. Used sparingly — a played record is rarely Mint.
NMNear MintLooks and plays as new: no marks of consequence, no surface noise, glossy. The practical ceiling for a played record.
VG+Very Good PlusLight signs of handling — a few faint hairlines that don't affect play; minor surface noise at most in quiet passages.
VGVery GoodNoticeable scuffs and light scratches; audible surface noise, but the music clearly dominates and it plays through.
GGood / Good PlusHeavily played: many scratches, constant surface noise, possible groove wear. Plays without skipping but far from clean.
PPoor / FairBadly damaged — deep scratches, skips or repeats, possible cracks. Largely a placeholder copy.

Grade vinyl and sleeve separately, under good light, to the worst defect. The grade is a condition assessment, not a value.

Common catalog prefixes

PrefixLabelFormatEra
BLPBlue NoteMono1951–1960s
BSTBlue NoteStereo1959–1960s+
CLColumbia (US)Mono1950s–60s
CSColumbia (US)Stereo1958–60s
PCColumbia (US)Stereo1970s
TCapitolMono1950s–60s
STCapitolStereo1958–60s
LPMRCA VictorMono1950s–60s
LSPRCA VictorStereo1958–60s+
PMCParlophone (UK)Mono1960s
PCSParlophone (UK)Stereo1960s+
LKDecca (UK)Mono1950s–60s
SKLDecca (UK)Stereo1960s+
33SXColumbia (UK)Mono1950s–60s
SCXColumbia (UK)Stereo1960s+
CLPHMV (UK)Mono1950s–60s
CSDHMV (UK)Stereo1960s+
LLLondon (US)Mono1950s–60s
PSLondon (US)Stereo1960s+
PRLPPrestigeMono1950s–60s
PRSTPrestigeStereo1960s
V6VerveStereo1960s
MGVVerveMono1950s
ASImpulse!Stereo1961–60s+
AImpulse!Mono1961–60s
SDAtlanticStereo1958–70s
MGMercuryMono1950s–60s
SRMercuryStereo1959–60s

A starting-point list of major labels, not exhaustive. The prefix gives label and format; the exact pressing still needs the runout and label design. Identification reference only — never a valuation.