Pierre DeRoche GrandCliff TNT Royal Retro

Pierre DeRoche has produced the first watch movement with six retrograde seconds mechanisms. Instead of cams, all the retrograde hands are driven by gears. Thanks to a strip-spring that has replaced the classical balance-spring system, each hand returns to their initial …

Imported: 17. Jul 2009 (18:57), PROFESSIONAL WATCHES

Permanent link: http://feedproxy.google.com/~r/professionalwatches/~3/Q7SpyqNbjhE/pierre_deroche_grandcliff_tnt.html