Hat from Siam

This particular hat was from a set of theatrical hats being sold on eBay from a production of the King and I 

There is no label in the hat so it could be a courtier or one of the Kings children.

I think it makes an excellent oriental courtiers hat.

Australian Bush Hat

Australian Bush Hat, that's what it says on the label 

This hat is made of leather with a wide brim to protect the wearer from the sun and rain.

The leather is a bit mouldy but will easily polish out, whoever owned it last must have put it away damp.

Around the crown is plaited leather band, its got a cowboy hat feeling and is probably a style used by Australian cattle ranchers.

The crown is creased telescope style from the way its made

Like most bush hats it's vented in the side

Bucket Hat

 A Bucket Hat 

A bush hat is similar to a bucket hat but has a stiffer brim.

A bush hat is a form of wide-brim hat commonly used by military forces

Also known as a Boonie hat by Americans  

 The hat as a fabric tape band of loops is sewn around the hat's crown. This ring is meant to hold additional vegetation/foliage as camouflage. 

Complete with vented crown

Brim up or Brim down, I think with the brim up you will gather a nice puddle in the rain to tip on friends.