What time is it? Watches and horology

Putting this out there...

Does anyone know anything about Vertex watches? I was given a Vertex Allproof that my Grandfather was given in 1954. It is kind of like this but with a slightly different face (and it has a modern strap) http://www.ebay.com/itm/Vintage-mens-9ct-gold-vertex-allproof-revue-77-movement-fantastic-condition-/390566833959?pt=UK_Jewelery_Watches_Watches_MensWatches_GL&hash=item5aef98ef27

I'd like to learn more about the history if possible - they seem to be well regarded but there is very little info about them that I can find on the net.

Cheers

I'm not sure if the history of the company is that clear to be honest. They were UK based but I suspect it was a UK office of a Swiss firm. They had close ties with Revue, they may even have been part of the same group of companies. Vertex in themselves are to a degree neither here nor there as they didn't make the calibres. Revue calibres are indeed quite well regarded, probably mostly because of the WWW connection Vertex fetch fair values. Post war you nearly always see Vertex watches co-branded with Revue.

But WWW oddities aside, vintage watch prices are primarily driven by modern marketing - if either Vertex or Revue were currently being marketed with Omega or Rolex then the vintage models would probably be similar values. As it is they aren't and prices reflect it.