Here is a good, older, set of stirrup bolts with sterling silver conchos that are marked Sterling, both are marked. They sure look to be Visalia or Keystone Bros conchos but they are not marked. They would have been marked where the bolt is attached to the concho so the mark would be covered up. The conchos are 1 5/8" in diameter and the bolt length is 4 3/4" and made of brass. These would sure dress up any outfit by all means. There is good age and patina. I will ship within the U.S. only. PayPal is preferred. Please include $5.00 to cover the USPS shipping and handling costs. See my other auctions for more great cowboy items. I prefer to not discuss reserve during an auction. Thanks for looking!