A year printed on a music package can look like the answer to “When is this album from?” Before using it, read what the year is attached to. Your copy may carry several dates with different purposes.
Use separate fields
In a personal collection note, distinguish the release information supplied for the album, the edition represented by your copy and the date you acquired it. Leave a field blank when you cannot establish it reliably.
Do not automatically turn a copyright line into a manufacturing date. Record the line as printed and check an appropriate release reference if the distinction matters.
Keep identifiers with the date
A catalogue number, format and edition wording help connect a reference to the actual copy. A title alone may be shared by several releases.
For an invented example, “bought in 2012” tells a personal story but does not establish that the recording or the edition first appeared in 2012.
Preserve the useful uncertainty
Write “edition not yet confirmed” instead of selecting the first matching cover in a search result. You can still enjoy and organise the recording while that detail remains open.
Our guide to identifying versions before treating them as duplicates helps with the next step. A few distinct date fields prevent a collection note from quietly combining the history of the music with the history of your copy.