The master preservation copy takes precedence over other versions in determining cataloging treatment and description.

Always describe the master preservation copy in the photoreproduction (533) note.

See: Structure of the 533 Note

Formulate an appropriate statement to describe the other version and record it in an 866 ‡z note on that version's mfhd. In most cases, one of the following should apply:

Original text.
Photocopy.
Positive service copy.
Negative service copy.
Service copy. Mixed polarity.
Master printing copy. Available for reproduction only