Ulysse Nardin Enamel Series: The Shtandart.
If there is an enamel watch which is totally justified, this certainly is the Vessels series. The Santa Maria, the San Marco and the Shtandart are a pleasure for the eyes.
Here is the Shtandart:
Why did I write " justified "? Simply because the link between Ulysse Nardin and the Sea is strong!
And much stronger than the enamels featuring animals, in my opinion.