5 1/8" aged iron shank curb bit with a medium port and a copper roller. 

Horlacher & Marsh Bit Heart Cheek Piece Copper Roller Mouthpiece w/ Hood 5 1/4" Made In Oregon, USA  

Horlacher & Marsh Bit Circle Cheek Piece Copper Roller Mouthpiece no Hood 5 1/4" Made In Oregon, USA  

Horlacher & Marsh Bit Santa Barbara Cheek Piece High Port Roller Mouthpiece 5 1/4" Made In Oregon, USA