A quick and dirty history before we get to the good stuff: my opinions. The Aquanaut
link dove onto the scene in 1997 with the 5060A (A is for Acier which is French for steel, click the video to hear my simply unimpeachable pronunciation). Designed to fill a hole
link in the Patek Philippe line and reach a newly rich audience
link of collectors thanks to the '90s dot com boom (shout outs and RIP to pets dot com) the Aquanaut was the more casual and less expensive answer to the Nautilus.
link