Leon, very cool piece, you got a heck of a deal imo, I would put the value around what your max bid was and that may be being conservative to be honest.
Here is a similar type piece that I sold through Heritage this past year. Rariden and Perdue date this one to around 1912-13 as that is when they played together. The piece was also made by the Pictoral News Co. My piece sold for less than I was happy with but yours is much more interesting with the offer on front, etc.
http://sports.ha.com/c/item.zx?saleN...#1054810548591