I thought about Sam Jones of the Celtics, but I didn't see anything like the one you posted. Here's another rub...theres one on ebay right now that is listed as 1918 Sad Sam Jones that is identical to yours. It is cert'd by JSA but the problem is when you look up the cert number it just says Sam Jones...like that really helps.
http://www.ebay.com/itm/Sad-Sam-Jone...item4399e9295f