Description of an historic shelfmark found in the copy as evidence for ownership.
Indicators
Indicator 1: # undefined (blank)
Indicator 2: # undefined (blank)
Subfields
$6 (M;NR) Evidence Sequence Indicator
$a (O;NR) Shelfmark Pattern
$z (O;NR) Note
Input Conventions
The evidence sequence indicator in $6 groups all chunks of information that describe the evidence for a specific ownership. All fields with an identical subfield $6 within a record describe the same ownership.
An indication of the pattern used should be given according to this list.