I could be wrong on this, but I don't think this is a Tener ball as is being claimed by the seller.
I don't think I've seen any YMCA balls stamped with the Tener stamping. I believe because these balls were used by the soldiers in WWI and not intended for game use in an NL game. Pretty sure that box opens there is no sig., and thus the seller is a bit off on the value.
http://www.ebay.com/itm/rare-1917-JO...3D201436245175