OLAC Best Practice for date of manufacture
Prerecording
Prerecording
Record when readily available and considered useful, especially when neither publication nor distribution information can be identified for the resource.
Always record for objects if the information is present on the resource. For streaming media, follow PCC Provider-Neutral E-Resource MARC Record Guidelines.
Recording
Recording an unstructured description
Option
Apply the option.
Date of manufacture not identified
Recording a structured description
Recording an identifier
Recording an IRI
Document Date: 2026/02/06
Document: https://access.rdatoolkit.org/en-US_ala-a66cfb22-2c2e-324f-88fd-98aa7d63b6ef