I have quite a few hand tools that were my fathers, grandfathers, and even my mother's, but my favorites have to be my Craftsman wrenches from WWII. When my Dad bought them he engraved his initials on them and the date "6/43". Instead of Chromium plating they are raw steel and stamped "War Finish".
I also have a great 1/4 drive socket set made by Plomb Tools. My mother bought it during the war when she worked for Lockheed building P-38 fighters. I still use all these tools on a regular basis. It's a legacy, man!