This brings up an interesting question. I've got piles of oxen shoes. Some are extremely crude and are likely 17th century. Others look more uniform like they could be machine made. Guessing yours is one of the newer ones as it's not as crude and some of the older ones. The tough part is that they were used into the 1900s in New England. But in most places fell out of favor around 1850. I'd love to know how old some of mine are