Need help either acquiring or recreating 1912 halter slide buckle for bridle

[Trooper51]

I would like to get a hold of a pair of those halter buckles. The one on the left is the Conway buckle with a loop on the side. I need a pair of those. Either original or something fabricated together. Even 3D printed would be okay. They are for a one inch wide strap. I would also like a pair of one inch wire buckles on the cheek piece. I have arrows pointing to the buckles in question with the attached picture. 

 

Thank you all for your help.