There is one thing I noticed with the Girard Perregaux Tourbillons with gold bridges: The back is less interesting, visually, than the front. With the Constant Escapement, this is not the case. The back has a lot of appeal, from my point of view. Here is ...
Did you see that a prototype of the movement, codenamed Project ELF, and made for Rolex, sold for less than CHF 4,500 Euros at Antiquorum a fortnight ago? catalog.antiquorum.swiss Best, Baruch
To be the dial side... Now the TGB movement is too beautiful to hide on the back! As for the Constant Escapement, indeed, the back is both interesting and beautiful! Best Blomman