Amazing, is all I can say about this fantastic hat. Straw hats are pretty common in vintage hunting, but with such a ribbon treatment, and with the perforations in the side of the crown for ventilation, this one is a stunner. It’s made by Adam, and is from their lowest quality “Barbosa” straw line. It’s not close to Panama quality straw, but this is a very fine hat, indeed. The advertisement in the final picture here is from 1951.
The Barbosa appears at the lower left of this 1951 advertisement: