P. & C. Habig Wien, "Special Qualität" "Special Zefir" with "Ventilo" possibly early 1950s maybe a bit earlier (missing paper label). This is a lighter weight very pliable felt "Special Zefir" which is a difficult find (found this almost 10 years ago). Made special for Fritz Reinhardt Frankfurt A/M.
P. & C. Habig Wien tended not use Sweatband Bows with their Soft Felt Hats.
Wonderful wide looking brim flow, Steve. Nice ribbon and bow treatment along with the matching brim binding, too. Hard to beat P & C Habig quality.