It's interesting to me that often on civil war items, you see mistakes made like the backward 's'. You would think that after all the work making a reusable mold for the Bormann fuze, that someone inspecting it would have noticed the backward 's'.
I remember one time seeing on a ACW cannon, there was some misprint stamped into it. I forget what now. But you would think after all the work casting a cannon, the inspector who I gather stamped the cannon himself, would have enough smarts to stamp it correctly.