I can remember visiting Pachmyer Gun Works on South Grand in L.A. in the early 70's and, while visiting a friend who worked there, watched an engraver upgrading a V grade to an Invincible in house, I don't know if some of the engraving was sent to Europe, but at least one was being engraved in L.A.
Gordon

Gordon

If you don't fly first class, your heir's will!