Good 2 bar water protection, screw down crown and bottom with a very thick gasket underneath.
The vintage Antimagnetic version also has an extra antimagnetic protection screen.
The beautifully shaped acrylic glass is very thick, with a construction that makes sealing more solid as pressure increased.
Genius and simple. Also a scratch with a polishing agent is easy to brush away. Admittedly with a little patience.
I do not distinguish between the vintage models and the current modern models. Both are a good choice.
Left a new 2018 version, the tw on the left are restaurations from the end of the 8ties
I love the military syle with green numbers.