Belgian congo "Wolseley pith hat"
I bought this headset to a person who is separated from a memory of his godfather.
Another version, more rare (! Not mine ](*,) ), that worn by one of four drivers (Short seaplane 827) of M'Toa, unit having bombed the Graf von Gotzen:
Sold there in a few years
1930/ 1940:
Mick