Thank you for posting. I love chain damascus. My guess is it is Latham engraved. Runge senior was also at Ithaca and I need to pin down the years. McGraw was there too but was pretty young. The dogs and the lettering is what I am going on. I knoe those old 10s had a lot of steel in them. Leads me to wonder if the tubes were available in various thickness. I bet the breech wall thickness is close to 1/4 of an inch?? Good luck on your project.

Walter c. Snyder