Thanks guys. I picked up the set at an estate auction of an engineer. I saw this pictured in the auction listing so i made the 45 min ride. Then i spent almost $1000. Got the wife a nearly new washer and dryer, and several boxes of tools. Most of the tools were snap on and blue point supreme. I was making my mid 1950's guess because of the date codes of 1955, and 1956 on the snap on stuff. Also picked up several of the octo-grip screwdrivers.