I picked this up from a buddy whose family runs a pawn shop, he did not know what it is for. Snap-On 2501, used for front engine bolts on 1928-33 Buicks.

Now, all you need is a 28-33 Buick!


Before:       https://www.bing.com/images/search?q=1932+buick+image&view=detailv2&&id=E6AA2362114A7193DC474D0AB2DA37D534EF07C1&selectedIndex=37&ccid=k7B7gyVK&simid=608019782050844557&thid=OIP.M93b07b83254a65ec24bf229b8428bfb7o0&ajaxhist=0

After:          http://www.moto-verso.co.uk/wp-content/uploads/2013/06/98ac355a2e2ade91ae92cf8d3175c3d0.jpg

I have a buddy with a '29 Marquette I have tried to buy, bet it would work on that.