As Mr. Wroclawski notes, this is a Series 1 machine, with 2Hp head. The head is clearly a "more recent" unit, with the slow/fast cover casting on the front. I have a Series 1 2J machine as well, but it has the earlier exposed dial on the front of the head. I notice your machine also appears to have only one X-axis table lock on the front, whereas the (again) "more recent" machines, say mid-1980's, are equipped with two X-axis lock screws on the front. I don't have a deep knowledge of when these transitions may have occurred at the Bridgeport factory, but my machine is dated around 1985, if I recall correctly, and does have two X-lock screws.
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Your machine looks to be in pretty good shape. As far as the table flaking, it can be strictly an appearance thing, but if it's done reasonably well, it is also an aid in reducing friction for moving heavy tooling or workpieces around on the table. "Done reasonably well" in this case means that the table is still flat.;-)
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As Marty notes, the Series 2 machines are much larger, and would either be outfitted with a 4HP head, or in the case of Series 2 Special, a 2 HP head like the one you have. There are files on this website that will give you info on machine dating vs. serial number when you get the machine. You can then (possibly) know if you have different vintages of head vs. machine base.
