If research has verified that the work is not registered for copyright, indicate that information in the copyright note.  The term "registration" may be abbreviated as "reg."

500 ## $a Copyright: no reg.

If the work has not been registered for copyright, but a copyright notice appears on the work or associated documentation, record the name and date in an additional note.

500 ## $a Copyright: no reg.

500 ## $a Copyright notice on film: Daiei ; 1952.

See also:

7B10.  Copyright registration information

7B.  Notes

7.  Note Area