Still mo'
#1 Unmarked but etched,"The Great United States Cookie & Plywood Co." Thought this one was funny until I found out a,"cookie" is a wooden disc used to fit two pieces of wood together.
#2 Marked,"Gusstahl" which I believe stands for Cast Steel.
#3 H.Boker with pearl handles.The cap lifter blade is broken but still functions.
#4 Hugo Bauermann