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Keywords from Image Description:
StahlhelmMProfDrSchwerd. en manufacturing process first german steelhelmet Model first sketch around and portrait from Prof Dr Friedrich Schwerd de Herstellungsprozess des ersten deutschen Stahlhelms Modell erster Entwurf um und Portrt von Professor Dr Friedrich Schwerd Ehrenbuch des deutschen Heeres Major Dei Weller Verlag World