US
November 1952- Label and catalog number
- Chess 1531
- Format
- Shellac, 10", 78 RPM, Single
- Runout / matrix
4315-2 37A side etched variant 1
4314-2 37B side etched variant 1
4315 37A side etched variant 2
4314-2 37B side etched variant 2
Vinyl pressings
by Willie Mabon And His Combo · 1952
I Don't Know / Worry Blues was first pressed on vinyl in 1952. Every vinyl pressing is listed below with its label, catalog number and runout codes, so you can tell an original from a reissue.
7 pressings came out in 1952, the album's first year. Compare the label and catalog number on your copy, then the codes etched or stamped in the runout groove (the dead wax around the label): they are the surest sign of an early pressing.
4315-2 37A side etched variant 1
4314-2 37B side etched variant 1
4315 37A side etched variant 2
4314-2 37B side etched variant 2
43I4 37Side A - runout
43I5 37Side B - runout
U-4314Side A - label
U-4315Side B - label
43I4 37Side A - runout
43I5 37Side B - runout
U-4314Side A - label
U-4315Side B - label
U-43I5ⅠA1 E2KW 8790 - 1Side A - runout
U-43I4ⅠA1 E2KW 8791 · 1Side B - runout
U-4315Side A - label
U 4314Side B - label
4315 37Side A runout
4314 37Side B runout
U-4315Side A label
U-4314Side B label
45-4315 37Side A - runout etched
45-4314 37Side B - runout etched
U-4315Side A - label
U-4314Side B - label
Not sure how to read the runout? See matrix numbers, runout and dead wax and how to tell a first pressing.
By decade, oldest first. Open a pressing for its full label, barcode and runout details.
| Year | Country | Label and catalog number | Format |
|---|---|---|---|
| 1952 | US | Chess 1531First year7", 45 RPM | 7", 45 RPM |
| 1952 | US | Chess 1531First year7", 45 RPM, Single | 7", 45 RPM, Single |
| 1952 | US | Chess 1531First yearShellac, 10", 78 RPM, Single | Shellac, 10", 78 RPM, Single |
| 1952 | US | Parrot 1050First yearShellac, 10", 78 RPM | Shellac, 10", 78 RPM |
| 1952 | US | Checker 1050First yearShellac, 10", 78 RPM | Shellac, 10", 78 RPM |
| 1952 | US | Chess 1531First year7", 45 RPM, Single | 7", 45 RPM, Single |
| 1952 | US | Chess 1531First yearShellac, 10", 78 RPM | Shellac, 10", 78 RPM |
| 1953 | US | Chess 1531Shellac, 10", 78 RPM, Single, Repress | Shellac, 10", 78 RPM, Single, Repress |
| Year | Country | Label and catalog number | Format |
|---|---|---|---|
| ? | US | Chess CH 15317", 45 RPM, Single, Reissue | 7", 45 RPM, Single, Reissue |
| ? | US | Chess 15317", 45 RPM, Single, Reissue | 7", 45 RPM, Single, Reissue |
| ? | US | Chess 1531Shellac, 10", 78 RPM, Repress | Shellac, 10", 78 RPM, Repress |
11 vinyl pressings of I Don't Know / Worry Blues are listed here, from 1 country, released between 1952 and 1953.
The earliest pressings are from 1952, in US. One of them is Chess 1531, released November 1952.
Check the catalog number on the label (first-year pressings use 1531, 1050) and the codes etched in the runout groove, then compare them with the pressings listed above; for example, 4315-2 37 and 4314-2 37. Later reissues often keep the catalog number but change the label design or the runout codes.
It depends on which pressing you have and on the condition of the record and its sleeve. Early pressings from the album's home country in near mint condition are usually worth the most; common later reissues are worth far less. Scan your copy with VinylLens to see its value for every grade.