Yes, it's real. Watch looks like its lived a hard life. The crystal has scratches between 4 and 5 also some chips along the edge between 5 and 6. The bracelet looks a bit beat up too. These are not the best pictures but even from these I'd pass.
The last couple I have seen on Ebay were in excellent condition and both sold for around $1800.00 at auction within the last month or so. This one is not in excellent condition.
Full kit seamasters in very good to great are pretty easy to pick up, so unless this one's a steal (like 1100 max) then I'd look elsewhere. Nice piece when clean, though.