DonCorson
[AHCI]
3358
Independents in Basel: Greubel Forsey
Stephen Forsey
wearing 2 prototype watches
Double Tourbillon 30°, RG with WG dial
The secret version for those that don't want to show off
24 Second inclined prototype worn by Mr. Forsey
24 Second inclined in RG
Invention piece 1
Quadruple Tourbillon Differential, is actually 2 double tourbillons linked with a differential that gives the average speed.
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Independents in Basel: Greubel Forsey
Stephen Forsey wearing 2 prototype watches Double Tourbillon 30°, RG with WG dial The secret version for those that don't want to show off 24 Second inclined prototype worn by Mr. Forsey 24 Second inclined in RG Invention piece 1 Quadruple Tourbillon Diff...
