Military style three-pronged neck stock buckle is reproduced from an original found on the Spanish ship Nurtra Senora Del Rosrio that sank in 1753 off the coast of Mexico. 2" across by 1 1/2" tall (our buckle is 1/8" larger than the original across the buckle). It is solid brass and is adjustable. The buckle "buttons" fit through the button holes in your linen or leather stock. You are buying one set. The picture shows the front and back of the buckle.