I listed this same button last October until May and pulled it. After that time it developed an age crack that is barely visible, but I discovered while taking new pics.
The crack runs along the side with Roosevelt. Now sadly I don't see it in the same condition. The item "RARE'Row of Democrats' Presidential button Roosevelt, Osborn, Wallace" is in sale since Friday, December 08, 2017. This item is in the category "Collectibles\Pinbacks, Bobbles, Lunchboxes\Pinbacks\Campaigns, Elections, Politics".
The seller is "cr250_ck" and is located in Phoenix, Arizona. This item can be shipped to United States.