It looks like something you melt something in, like lead, and make lead bars or something like that.
Hey TC that hickory nut thrasher was a good guess but I don't think thats it because its too big to be from a hickory nut thrasher, therefore that leads me to believe it is from a walnut thrasher, bein its the bigger size and all. But the hickory nut does remind me of when I was a young strong boy on my grandfathers farm. When hickory nuts come in my grandfather would send me and my older brother out to the woods to POLE HOGS. Man we done a lot of it too. Now you know thats where you take a 60 pound or so pig and you take a big long hickory pole, the longer the better, and you stick it up the pigs backside and hold him up in the tree so he can eat acorns. The longer the pole, the cleaner you can get a tree because it is easier to get to the nuts way in the tops of the trees. My grandfather had fine hogs. This hickory feed also added to the hickory flavor when you smoked the hams and bacons over smoldering hickory chips.