saw this on ebay and was wondering about the core and if its any good

Unless you plan on displaying, $300+ for a urethane ball is madness imo (what usually see those for).  It was I believe one of the better urethane balls for its time but still urethane.  IIRC a bit of a Faball blue hammer knock off as core looks identical.  You can get a blue hammer once drilled in good condition for well under $100 shipped.

http://123bowl.com/bowling-balls/award-scores-unlimited/patriot/ 

I have the same ball, but red.  I believe it has the diamond shaped core.

I was told it had a weight block like the old ebonite Turbo.
 I looked it up. If this is correct, it does.

http://123bowl.com/bowling-balls/award-scores-unlimited/patriot/
 

That looks like a Blue Nitro!!