Hi and welcome!
It's an EG500CB, but there are some mixed messages here. The K80 serial says November 1980, but the pickups are dated January 9 1980, and you very seldom, if ever, see that big a difference between the serial and the dates on original pickups. They are from the correct manufacturer (Maxon), though, that date stamp style is unique to them. The visible pot date code looks like 06, which would be June 1980, which is less of a problem though, pot dates can be a few months off sometimes.
The thing with Nov-Dec guitars is that they normally have the following years catalog specs, or sometimes a mix of the two year's features, which seems to be the case here. It has the 1980 Gibson-correct headstock diamond, not the revised style that came into use in 1981. Also, the tuners are according to the '81, catalog, the 1980 edition shows the EG500C with Grover-style bean grip tuners.
Exactly what type the pickups are, I can't say, I haven't studied Greco humbuckers that much. Specs in both catalogs say UDs, but they could be some other model as well, I suppose. Also, it looks like it doesn't have fret edge binding? It should have, but it could of course have been refretted.