You take a new Ollech & Wajs case with dial and handset (ebay) add a new Elabore-grade 7750 movement (also EBay) and pack them off to an excellent jeweller in Wales and end up with a beaut of a chrono.

I'm a big fan of the 7750 movement.

I could have attempted the assembly myself but was happier leaving it in the hands of a craftsman.

I am delighted with the resultant watch. Now it's time to play with straps.

 

cool watch. I don't like the 7750 as you do because of the rotor but it's definitly a good movement.

 

Hate the 7750 layout but love your watch!

 

WOW!
That is a real beauty, and the Jeweler outdid himself.
Did he add the lettering on the case back?