I have a 1910 LC Smith 00 grade, the lowest grade manufactured. It has what appears to be a factory repair with a splice of the left side of the stock head. I didn't see it until I was refinishing the stock and this was after soaking it for a week in acetone. I don't know what glue they used, but it didn't come apart with that soak and is still going strong today. See if you can spot the splice line.