Very clean cosmetic condition!
1971 Clipper 'AG'.
Just a note, my usual cautionary regarding the servicing of mechanical watches for anyone that has not been subjected to it before....
The Overhaul you describe, in the trade known as a 'CTR', is recommended to be done every 4-6 years. The watch will indeed run for many more years, but regular maintenance is critical. Dried out lube and dirt will act as abrasives and accelerate the wear and tear of the mechanism, even the jewels themselves. I often see watches that have run for decades without any service, and the wear is very noticeable. Even if the watch is put away for long periods without being run, the lube dries out and as soon as the watch gets used again, the wear and tear begins, exacerbated by the dried out residue that was the lubricant. Even without dirt, the residue acts as an abrasive and accelerates wear.
The service interval is an Industry standard, but it is rarely followed. I tell my customers the best analogy is a car, it will run without service until it just throws a rod or is so gummed up it quits, and the same is true of the mechanical transmission in the watch movement.
Wear your heirloom in good health, it is a beautiful thing.