I recently purchased a bone colored Borsalino that I believe to be from the late 30's early 40's
It is the softest hat I have ever felt and is extremely light, though the felt is not very thin.
I will post pics when I get the chance.
Now that I am back online from home it should be alot easier.
One interesting thing about the hat is that is is of the same design that my grey and my brown vintage Borsalino have... same as a light brown version Wild Root has too.
High untapered crown with a cavenaugh edge... same model, different felt quality.