Here is the enigmatic Zenith S.58 diver launched in 1958.
Check out the rare gunmetal gray dial with the arrow seconds hand.
This is a beefy 37mm wide, excluding the signed crown by 46mm from lug to carved lug. The automatic Zenith 2542PC movement keeps excellent time.
Some thought this watch was named for the launching of the Sikorsky helicopter in 1958. The savants tell us that actually the S means Super as in "super water resistant."
Whatever it means, it's a legend.