This buckle is most likely manufactured. I would be interested in knowing if it was sterling silver or nickel? If you looked at enough searches https://www.google.com/search?q=horse+buckles&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjtyJGXv5fZAhVL0YMKHXwCA9QQ_AUICygC&biw=1680&bih=885 you might possibly find where it came from. Thanks for sharing.