Variants and limited editions

Once a catalog records objects rather than titles, the hard question stops being "what is this" and becomes "is this a different one". Collectors hit it constantly: a second printing, a variant cover, a signed run, a regional release, a reissue with one component changed.

The working test on ctlgs is simple, and contributors in every catalog arrive at much the same wording:

If a collector would knowingly pay a different price for it, or go looking for this one rather than that one, it is its own entry.

Everything else is the same object with a note.

Its own entry

• Numbered or limited runs. An edition of 100, signed and numbered, is not the unsigned second run, even from the same plates.
• Regional versions. A Region 2 disc, a PAL cartridge, a UK first edition with a different cover — different objects, and often different content.
• Reprints and later printings. A second printing with its own date, or its own ISBN or barcode, is its own entry. Collectors pay firsts prices for firsts.
• Format changes. Hardcover and paperback, VHS and DVD, vinyl and cassette.
• Packaging variants that were sold as such: a box set, a slipcase edition, a limited edition with an extra disc, a long box.
• Cover variants issued deliberately, which comics and games do constantly.

The same entry, with a note

• A price sticker, shrinkwrap or retailer label added after the fact.
• Wear, signatures and inscriptions on your copy — that is condition and provenance, and it belongs on your copy, not on the shared entry.
• Printing differences nobody sells on: a corrected typo with no new printing statement, a slightly different shade of the same ink.
• Bundles assembled by a shop rather than the publisher.

If you are not sure

Two things help. Look for what the object says about itself: a new printing statement, a new catalogue number, a new barcode, a new copyright date. Those are the publisher telling you it is a different object.

And ask. Every catalog has a thread for exactly this on the forum, and the answers tend to become the catalog's guidelines. A case nobody has ruled on yet is worth raising rather than guessing — a split that turns out to be wrong is more work to undo than to avoid.

Your copy records the rest

Whatever the entry says, your own copy carries what is true of yours alone: condition, completeness, where it is, what you paid — one record per copy. The shared entry describes the object; your copy describes your object. See editions and pressings.