Vintage British Wolseley Pattern Pith/Sun Helmet

Found this at a local shop. Picture #3 is my set up at home. The following was found on the internet:

Although the use of aluminum foil had been experimented with in the late 1800s, in the middle of the 1930s the first sun helmets came into use that featured a layer of aluminum foil inside the dome as a protection against the heat. That foil became a standard in the production both of the cork, and later in the war, the more economic pressed felt version of the Wolseley helmet. Besides these “nameless” foils, a brand existed, that that can be found in military and civil helmets alike: the “Coolair Aluminex.”
...Stuart Bates’ book, The Wolseley Helmet in Pictures, including an experimental one with a visor. This helmet has a label printed in blue letters directly on the foil that reads. “Royal Letters Patent No 397985 7/9/33 10°-15° Cooler.