Note that the index numbers are only technical numbers which have no persistence. After a new system generation is done, all of them are invalid. To generate a persistent link, use the name.Use the URL:
http://ww-person.com/cgi-bin/l3/LANG=germ/F=Siegfried!@Anastasius@Eduard@Maria/N=v.Pitner
Siegfried! Anastasius Eduard Maria v.Pitner
alternatively: /cgi-bin/llmult/LANG=germ/P=53036742