Thank you Ed for the kind words.
Only Nixon could have gone to China. I wish that he had returned with some of those, apparently screw-less, thumb bars.
Perhaps these thumb bars are as long as they are in order to have maximum compression-fit-grip plus thumb purchase surface area without interfering with deep cuts by hitting the target material as the blade slices through it. A shorter press-fit thumb bar could pop off more easily, perhaps. Just speculating on a hypothesis. Good observation DM and, as usual, you set me to thinking (yes, it does hurt) as usual you clever fellow you. The color of the brass, if it is indeed brass, looks correct. I have a collection of Shilin Cutters from China and their brass is reddish, slightly less golden than that in the USA, so it looks like brass to me.