Notes on verification

Confirmed by the DNB archivist's blog post describing the actual Nachlass materials, which is the authoritative primary source (holder of the manuscript). However, the specific detail of '2 of 4 chapters' is not independently corroborated by a second separate source; other sources only confirm the novel is an unfinished fragment. [tier=silver indep_score=0.75 clusters=2 claim_tier=notable | framework convergence=single on Description derived from the physical manuscript holdings of the Nachlass Leo Perutz at the German National Library's exile archive, as catalogued/described by archivist Leon Ratermann (upstreams: Deutsches Exilarchiv 1933-1945 der Deutschen Nationalbibliothek, Nachlass Leo Perutz (archival holding, signature EB 86/094)) — publishers independent, evidence may not be | kind=empirical eligibility=high]