Jay (Eire)
12306
Here we go:
This is a tough question, and one I've thought about a lot in recent times.
Here's my best shot:
Urwerk 105 CT
FPJ Chronometre Bleu
Rolex Daytona 16520
Patek 5711
Seiko Diver / Swatch Sistem 51
Depending on ones life, and the places one lives or travels too the Seiko Diver / Swatch Sistem 51 could be replaced by a Rolex Sub Hulk.