Found this US bridle,bits and halter with blinders and reins between the floors of the loft of a 150 year old barn.The 4 US buttons are all brass with the ones on the blinders being slightly smalled than a US half dollar. The buttons on the bridle/halter are about silver dollar size with a iron loop on the back for the leather to run through. I have not attempted to remove the buttons because the leather is hard as a rock and I will probably have to cut them off. I can find no markings on the bits but they are very rusty and I have not attempted to clean them yet. Any help will be appreciated. Thanks