Great find, Steve. Odd isn't it that they seem to show in flocks!?J. Hückel´s Söhne "Flexible" made for Ober Österreich Hutmanufaktur Thom. Janout Linz, F.P. 5 3/4 possibly later 1920s. Ober Österreich Hutmanufaktur Thom. Janout Linz had wholesale and retail locations. At this time they were not a manufacturer. The retail location at Schmidtorstr. 1 is still in business today. It's interesting that I have recently come across a couple of J. Hückel´s Söhne sourced Stiff Felts.
Janout Hüte, Schmidtorstr. 1 Linz
Photo by: Werner Wittersheim, 12/27/2009, https://live.staticflickr.com/4008/4266422755_b44bb54d96_h.jpg