Yes, Ive always assumed its one of those, but why is it so different? And I only see these at old sites along the old RRs, all rusty like this. It would be interesting to know what time period they came from. 1800s, early 1900s? Im thinking somewhere in the 1900s, and they may not be all that old, but like I said, you only see them along old RRs. And thank you for your response.