This is the "Mahone" by Bailey.  This is a Bangora Straw hat that features a vented crown, leather sweatband and 2-ply ribbon hatband and spur pin.

• Brim:  4 1/4"
  
• Crown: 5 1/4" Rodeo High Cattleman
• Color: Ivory
• Material: Bangora Straw
• Made in Mexico