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How do you date a CD by its packaging?

Packaging dates a CD more reliably than the disc does. A 12-inch cardboard longbox puts a North American release in the 1980s or the first years of the 1990s, because longbox packaging was phased out officially on 1 April 1993. A standard jewel case, at 142 by 125 by 10 millimetres, has been in use since the format launched in 1982 and dates nothing on its own — but the slimline case, the digipak and the card sleeve each carry their own signals.

A cardboard CD longbox, the tall paperboard sleeve used for compact discs before 1993
The longbox: 12 inches tall, the same length as a 33⅓ LP, so shops could keep using their record racks. Image via Wikimedia Commons, CC0.

The longbox, and the date it ended

For a collector that single date is the useful part. A sealed longbox is a pre-April 1993 North American artefact by definition, and it is the packaging most often thrown away at the point of sale, which is why intact ones are scarce relative to the discs inside them.

A standard CD jewel case, opened to show the disc tray and hinge arms
The standard jewel case: 142 by 125 by 10 millimetres, designed by Peter Doodson and in use since the compact disc arrived in 1982. Photograph by Ramón Vasconcellos, CC BY 2.5.

The jewel case and its dimensions

Case typeDimensionsWhat it tells you
Standard jewel case142 × 125 × 10 mmIn use since the format launched in 1982. Dates nothing by itself, which is exactly why the outer packaging matters.
Slimline jewel case142 × 125 × 5 mmHalf the depth. Singles, promotional discs and multi-disc sets that needed to fit a shelf.
DigipakCard outer with a moulded trayA deliberate presentation choice rather than a default, so it signals a release someone spent money on.
Card sleevePaper or card, no trayBudget reissues, box-set inners and promos.

The jewel case was designed by Peter Doodson, who specified polished ribs because they pick up light and shine — which is where the name came from. Its three chronic weak points are worth knowing before you buy a used copy:

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Slimlines, digipaks and sleeves

What packaging condition is actually worth

An editorial position, because grading conventions here are looser than collectors admit:

Why every CD wallet is the same size

The 142 by 125 millimetre footprint is why disc storage is so standardised: sleeves, wallets and racks are all built around a fixed rectangle, which is unusual in a consumer product category and very convenient for buyers. It also means capacity is the only real variable, and capacity is what we costed separately.

Last verified 1 September 2026 against published dimensions and dates for CD packaging formats as cited below, and the 1 April 1993 longbox phase-out date in particular

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Frequently asked

When did CD longboxes stop being used?

Longbox packaging was phased out officially as of 1 April 1993, after the "Ban the Box" campaign launched in 1990 by the Earth Communications Office. A longbox therefore dates a North American release to before that.

How big is a CD jewel case?

142 by 125 by 10 millimetres for the standard case, and 142 by 125 by 5 millimetres for the slimline. The footprint is identical; only the depth changes.

Why was the CD longbox 12 inches tall?

Because that is the length of a 33⅓ LP, so record shops could sell compact discs from the racks they already had rather than refitting.

Does a broken jewel case reduce a CD’s value?

Very little. Cases are cheap and replaceable. A missing or torn booklet or rear inlay matters far more, because those carry the artwork and the catalogue number.

Who designed the CD jewel case?

Peter Doodson, who specified the polished ribs because they catch the light — the detail the case is named for.

Sources

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LinkToLooks identification desk — we identify objects out of real photographs and check every listing by eye before we link it. Empty beats wrong. About the desk · published 1 September 2026.