I think it might be from the late 70s or early 80s, but I'm sure some others will chime in soon with their thoughts. It appears that the label says, 100% Wool, made in N.Z.
I am thinking the N.Z. is for New Zealand? The stamp in the inner crown says the Doeskin body of the hat was made in the USA by Geo. W. Bollman Co. You see that hat body maker quite often. Hat makers, Milliners and designers would get hat bodies from various makers and then attach their own labels on the inside of the hat after creating their own designs on the blank hat bodies. Your little tag that states the materials and N.Z. does not indicate who finished the hat so it's difficult to tell. I think it's very stylish and smart and looks like nice quality.