It looks like a generic "import" lathe, probably from the 70's, probably from Taiwan. I would hardly call it "huge". It is a garden variety lathe, maybe 16" swing and lightly built for the nominal capacity. It is likely one of the "forbidden" types of machine tools to discuss here, being made in Taiwan or China, so expect the thread to be locked.
I am guessing it was from the 70's as it has the "Norton" style of quick change gearbox. Not a particularly valuable nor desirable machine tool. Common as dirt, and many importers badged these sorts of lathes with their own names, sometimes mimicking or playing off of old-line US manufacturers' names. Some sharpie in the USA with little more than a rented office called himself "ABC Industrial Machinery" and ordered the lathe from some factory in China or Taiwan with his firm's name on them. Same lathe might well have been sold by a dozen more similar firms that came and went in the USA, all selling the same lathes with maybe different paint and a different name on them.
I'd call the lathe on the light side for its capacity, and calling it huge is a gross overstatement. Huge is a lathe that will swing work maybe 6 feet in diameter x 40 feet long. Sit the lathe in this thread next to an older US made engine lathe of like capacity and there will be at least twice the weight of GOOD iron castings in it and it will LOOK like a real lathe. This thing is hardly worthy of the name "engine lathe", qualifying in a nominal sense.