Cunningham Log for early Chrysler hemi is my guess. It's something I found wrapped up in newspaper in an old cardboard box in my pop's parts trailer. He loved buying old wall hanger speed parts.
That is really different, do you plan to sell? I am not sure what it is worth, but I like it and its cool
If that is in fact related to the Briggs Cunningham cars it could be worth a lot to the right person. I would do some research before letting it go.
From what I have seen I would guess this is off of a production car rather than a compe***ion car. There are only around 25 production cars, so A rare piece either way! The Revs ins***ute in Florida has a few Cunninghams, they might be able to give you a more concrete answer if you are that interested. Super neat piece!