<altIdentifier>

<altIdentifier> (alternative identifier) contains an alternative or former structured identifier used for a manuscript, such as a former catalogue number. 10.4 The Manuscript Identifier
Module msdescription — 10 Manuscript Description
In addition to global attributes att.typed (@type, @subtype)
Used by
msIdentifier msPart
May contain
core: note
header: idno
msdescription: collection institution repository
namesdates: bloc country district geogName placeName region settlement
Declaration 

<rng:element name="altIdentifier">
 <rng:ref name="att.global.attributes"/>
 <rng:ref name="att.typed.attributes"/>
 <rng:group>
  <rng:ref name="model.placeNamePart_sequenceOptional"/>
  <rng:optional>
   <rng:ref name="institution"/>
  </rng:optional>
  <rng:optional>
   <rng:ref name="repository"/>
  </rng:optional>
  <rng:optional>
   <rng:ref name="collection"/>
  </rng:optional>
  <rng:ref name="idno"/>
  <rng:optional>
   <rng:ref name="note"/>
  </rng:optional>
 </rng:group>
</rng:element>
element altIdentifier
{
   att.global.attributes,
   att.typed.attributes,
   (
      model.placeNamePart_sequenceOptional,
      institution?,
      repository?,
      collection?,
      idno,
      note?
   )
}
Example
<altIdentifier>
 <settlement>San Marino</settlement>
 <repository>Huntington Library</repository>
 <idno>MS.El.26.C.9</idno>
</altIdentifier>
Note
An identifying number of some kind must be supplied if known; if it is not known, this should be stated.