Did a little more digging and discovered a couple of things regarding these “blacksmith made” bone shakers: some can be antique, I.e., circa late 1860’s, but most are not really rideable, as they were a made by someone who was not a bicycle designer or had even ever ridden an early contraption. I did learn that if it has hex bolts rather than square head bolts it is very suspect, a blacksmith at this time would make a square head bolt with threads. The problem with authenticity is we have no makers mark other way of identifying who or where or when. Many of these were cobbled together and then added to decades later. Apparently, if there is any welding visible it is a sign of forgery, or at best a much later repair as there was no practical welding in the 19th c. The Philippines is a common place where some of the knock offs have been traced to. As for this one for sale on eBay, it has multiple bids so what do I know? LOL. The learning is enjoyable!