Created from the Wiktenauer Books staging import for likely-missing seventeenth-century works. Source row 50.
K-block staging entry validated for model fit. Imported from staging batch duell-thimm-k, source entry 1164.
Gelli cites the 1619 Magdebourg witness under Joachim Koppen and separately notes a shortened Cours v. d. Fechtkunst that may be another issue or related witness.
Vigeant 1882 preserves a sparse 1619 Magdebourg folio witness for Koppen's discourse on fencing.
Duplicate work 1384 consolidated in quality phase 322 (2026-09-04).