Although they’re not common, I have been able to find a fair number of helmets on soldiers, but you can’t tell if they are wearing anything (coif, schlappe, haub) under the helmet. Almost all of the soldiers wearing helmets were also wearing full armor (gorget, breastplate, pauldrons, vambraces, and cuisses), so I would assume that they’re probably officers.
Not sure what conclusions you can draw from these. Images of hairnets show up in all sorts of places, and on all sorts of people. And as someone else mentioned, I have no idea how you'd prove a negative.
Oh, and while the Saint Max web site appears to be down at the moment, they have an article there about Landsknecht hairstyles.
What this discussion needs is some image links!
• Durer men’s bath (um, no clothes so maybe not so helpful…)
• Durer’s Paumgartner Altarpiece (saints on both wings, wearing armor but no helmets)
• Durer Knight and Landsknecht (no armor)
• Cranach’s Martyrdom of St Catherine (Hairnet, no armor)
• Baldung’s Martyrdom of Saint Sebastian (two hairnets, one under the red hat)
• Baldung –Count Christoph I of Baden Munich (Possible hairnet under a hat)
• Cranach portrait of a man in an embroidered cap (not a soldier)
• Burgkmair – Portrait of Jacob Fugger (not a soldier)
• Jorg Breu (possible hairnet on the guy in the upper left)
Although they’re not common, I have been able to find a fair number of helmets on soldiers, but you can’t tell if they are wearing anything (coif, schlappe, haub) under the helmet. Almost all of the soldiers wearing helmets were also wearing full armor (gorget, breastplate, pauldrons, vambraces, and cuisses), so I would assume that they’re probably officers.
Not sure what conclusions you can draw from these. Images of hairnets show up in all sorts of places, and on all sorts of people. And as someone else mentioned, I have no idea how you'd prove a negative.
Oh, and while the Saint Max web site appears to be down at the moment, they have an article there about Landsknecht hairstyles.