US
1959- Label and catalog number
- Mercury 71435X45
- Format
- 7", 45 RPM, Single
- Runout / matrix
YWM-18190-9 IFSide A deadwax, variant 1
YWM-18192-9 FSide B deadwax, variant 1
YWM-18190-5 IFSide A deadwax, variant 2
YWM-18192-7Side B deadwax, variant 2

Vinyl pressings
by Dinah Washington · 1959
What A Diff'rence A Day Makes was first pressed on vinyl in 1959. Every vinyl pressing is listed below with its label, catalog number and runout codes, so you can tell an original from a reissue.
14 pressings came out in 1959, the album's first year, in 9 countries. 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.
YWM-18190-9 IFSide A deadwax, variant 1
YWM-18192-9 FSide B deadwax, variant 1
YWM-18190-5 IFSide A deadwax, variant 2
YWM-18192-7Side B deadwax, variant 2
YWPB-1638Label A
YWPB-1640Label B
YWM 18190-MS1 A1 RRunout Side A
YWM 18192-MS3 1 RRunout Side B
YW18190Matrix Label
YW18190Side A Label
YW18192Side B Label
YW 18190Side A Label & Runout (Etched)
YW 18191Side B Label & Runout (Etched)
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 |
|---|---|---|---|
| 1959 | Unknown | Mercury 71.435 x 45First year7", 45 RPM, Single | 7", 45 RPM, Single |
| 1959 | Australia | Esquire Mercury 45293First year7", 45 RPM, Single | 7", 45 RPM, Single |
| 1959 | Canada | Mercury 71435XFirst year7", Single, 45 RPM | 7", Single, 45 RPM |
| 1959 | Canada | Mercury 71435First year10", 78 RPM, Single | 10", 78 RPM, Single |
| 1959 | Denmark | Mercury 71435-X-45First year7", 45 RPM, Single | 7", 45 RPM, Single |
| 1959 | Finland | Mercury 71435 x 45First year7", 45 RPM, Single | 7", 45 RPM, Single |
| 1959 | Italy | Mercury 70411x45First year7", 45 RPM, Single | 7", 45 RPM, Single |
| 1959 | Mexico | Orfeon 45-683 / Mercury 45-683First year7", 45 RPM, Single | 7", 45 RPM, Single |
| 1959 | Norway | Mercury MNS 3054First year7", 45 RPM, Single | 7", 45 RPM, Single |
| 1959 | UK | Mercury 45-AMT 1051First year7", 45 RPM, Single | 7", 45 RPM, Single |
| 1959 | US | Mercury 71435X45First year7", 45 RPM, Single | 7", 45 RPM, Single |
| 1959 | US | Mercury 71435X45First year7", 45 RPM, Promo · Promo | 7", 45 RPM, Promo · Promo |
| 1959 | US | Mercury SS-10008First year7", 45 RPM, Single, Stereo | 7", 45 RPM, Single, Stereo |
| 1959 | US | Mercury 71435X45First year7", 45 RPM, Single | 7", 45 RPM, Single |
| Year | Country | Label and catalog number | Format |
|---|---|---|---|
| ? | Canada | Mercury C-30078X457", Single, Reissue | 7", Single, Reissue |
| ? | New Zealand | Mercury 714357", 45 RPM | 7", 45 RPM |
| ? | US | Mercury C-30078X457", Single, 45 RPM | 7", Single, 45 RPM |
| ? | US | Mercury C-30078X457", Single, Reissue | 7", Single, Reissue |
| ? | US | Mercury C-300787", 45 RPM, Reissue | 7", 45 RPM, Reissue |
| ? | US | Mercury C-30078X457", Single, 45 RPM | 7", Single, 45 RPM |
| ? | US | Mercury C-30078X457", Single, Reissue | 7", Single, Reissue |
| ? | US | Mercury C-30078X457", Single, 45 RPM | 7", Single, 45 RPM |
22 vinyl pressings of What A Diff'rence A Day Makes are listed here, from 10 countries.
The earliest pressings are from 1959, in US, UK, Australia, Canada and more. One of them is Mercury 71435X45.
Check the catalog number on the label (first-year pressings use 71435X45, SS-10008, 71.435 x 45, 45-AMT 1051) and the codes etched in the runout groove, then compare them with the pressings listed above; for example, YWM-18190-9 IF and YWM-18192-9 F. 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.