...
Similarly, if adding new copy and find already existing copy, barring explicit instructions to add as c.2, set aside for the Curator, who can then decide if it is a replacement copy/added copy or for book salebook sale–if replacing, then see the special, as yet to be developed acquisitions procedures for replacement copies.
541 Paperback copy with library binding replaced by Matteson copy:
541 Replacement copy, replaces Stephen Pascal copy