Question on Orry's Payment to George

This question is of a historically accurate nature. If you're rolling your eyes at this point, feel free to skip it and move on...

When Orry paid George the $80,000 (profits from their joint cotton mill business), what kind of money did he use? I'm not an expert on the history of US money... but I understand that American money in March-April 1861 (the time period of the scene) was state or bank issued (as opposed to the nationwide Federal Reserve system we now have). I understand paper money issued by a bank in those days represented real assets (gold & silver) held by the bank. Anyway, my thought is the money Orry would have had would likely have been bank notes or South Carolina state currency (see link below of an 1857 $5 bill).

But by the time he meets up with George to give him the cash after Fort Sumter falls, the money would have been seen as no good in Pennsylvania due to the war. Of course, he could have paid him in gold but nobody could (or should) carry around $80,000 in gold, as heavy as that would be.

Am I correct on all this? I was just wondering...

http://www.allensinc.com/coins/currency/obsolete/sc6064a.htm