Came from U.S. Military Surplus site, but no stock number.  

The only label is the size on the inside.  

Looks similar to the Aviator and/or Russian style, but I have seen similar hats worn by police in the U.S. 

Front "bill" snaps up, but can be let down, as shown in pics.  Ear flaps can be strapped up or down.

MY PRICE:   $20.95 plus shipping plus $7.96 USPS Priority shipping