863-865 $t - Copy number:

Subfield $t contains a single copy number or a range of numbers for copies that have the same location and call number. The caption for the copy number is contained in subfield $t (Copy) of the 853-855 Captions and Pattern field that is linked to the 863-865 field.

When the copy number applies to the entire holdings statement, it is recorded in subfield $t (Copy number) of field 852 (Location) . Example: