If the Royal Oak was the revolutionary shout, the Nautilus (also by Genta, 1976) was the whispered riposte. Inspired by a ship's porthole, it is the epitome of understated, elegant sportiness. Its case shape is softer, more organic than the Royal Oak's angularity.
The iconic horizontal embossed dial, especially in gradient blue, is legendary. It changes character from near-black to brilliant azure depending on the light.
There’s definately a great deal to learn about this issue.
I love all the points you have made.