This stylish derby--made by the famous Cavanagh Hat Company, Ltd--once belonged to one of the stylish ladies in the LCH field. Offered for sale as a costume piece, it is not ATSM certified. Made from wool, silk, and leather, complete with cord and original box.
 
There is no size indication on the derby, but it is 8 inches from front to back and 6 inches from side to side. Perhaps a modern size Medium. Contact LCH via email at limestonecreekhunt@yahoo.com  if you would like more specific measurements.
 
Shipping additional at buyer's cost.