Uhmm... I prefer the old quarters as opposed to the new state ones. The brand would be...umm...I think the U.S. *checks* Ahh yes, it says right there on the side...
lol just kidding. Obviously you aren't talking about a hammer, so I assume you mean the narrow ended spike? I found several just by looking at different areas. My grandfather had one, and they have them at yard sales all the time... Why may I ask, do you need a brand name anyways? Are you having a hard time finding one? Try ebay.
Hope this helps, at least a little bit,
-PTG