68/BB

I replaced the radiator in my 68 Corvette project car. This one was removed because I just wanted to make sure I had a good reliable unit in there (I put in a DeWitts). I was just wondering if this was by chance an original or is it a replacement radiator. The only identification I can see is this metal tag. Is this a date code for September 1984? Car was originally a 327-300, 4 spd with A/C.