Can anyone date this Henry Heath bowler?

Hi, I just won this on Ebay and paid £15 for it. We're trying to get a date for it, as my partner would like to use it for American West reenactment. Any ideas as to the date?

 

Hard to say for sure from the photos. These wonderful hats changed very little from decade to decade, so it can be difficult to pin down a date. Edwardian to 1920s is the best I can guess.

Lets see what others think.