S-block staging entry validated for model fit. Imported from staging batch duell-thimm-s, source entry 1954. Vienna: Gerold’s Sohn, 1873, two lithographic plates with 14 figures; the distinct Duell-Regeln was separated. Individually bibliographically reviewed in phase 93 against the complete source entry and, where needed, independent catalogue evidence.
Quality phase 275: duplicate work-level record consolidated into this canonical work; distinct bibliographic manifestations and unresolved witness differences remain represented at edition level. Former work 3609 merged into work 2823.