The difference in the early and late 2011 MBP 2.2 is how much Vram in the GPU card. Early was 1.0GB (that was the high end) and late is 500MB (that is the lower end). Both are great machines. In Geekbench scores the early 2011 high end scores higher then the 2011 low end. But you can get the early cheaper.
Seconded on this theory, but we can't be sure until OP posts a full list of specs that the website gives him.Assuming it's not built to order, i think it's the late version. The early 2011 came with a 750 GB hard drive since it was the higher model.
Check out the refurbished store as well. They have the same model for 1529, one with a 750 GB HD for 1599.
The model number is for a late 2011, and the 512MB (I'm assuming that's for the 6750 since the Intel HD 3000 will only have 384(MB) RAM) also seems to point to a low end Late 2011 model.Here's the link to Microcenter's site. Looks like a late model.
Click the Specs tab for detailed description on the GPU