M-4 1925-1926 – gripper driver. This does not show up in the catalogs. Very few examples are known, but here are 2 examples
9/32 sockets 1925 – 1945
There are 2 basic socket styles. The first style exists from 1925 to 1929. After this, the newer style in a Nickel finish existed into the 1940 when Nickel shortages caused an oil finish to be used