These tiny knives were manufactured by the Eagle Pencil Company. Hold the knife blade down and press the button on top and the blade falls into the open position. Hold it upside down, press the button and the blade falls back into the body of the knife. These tiny pencil knives were made from the late 1800's to the early 1930's or a little later. These three date to the 1920's or earlier. Notice the middle knife with the three digit phone number.
"It didn't hurt, flirt, blood squirt, stuffed shirt, hang me on a tree
After I count down three rounds, in Hell I'll be in good company" - The Dead South