Time to switch of another company, Hinsdale Tool co. The GC-20 set shown in the first two pictures is 1/2" hex drive, an early set from the 1920's. Note the inside label shows both Hinsdale and Sears Roebuck & Co. Both square and hex sockets but needs a hex ratchet. Only hex set I have come across. The third picture is a CN-50 set and is called a mechanics set made of chrome nickel. It is 1/2 inch drive but in the same box as the hex set so is probably late 20's or early 30's. Note the breaker bar also converts to a tee wrench.