Derek Pratt for Urban Jürgensen ----> pivoted detent escapement, calendrier perpetuel, répétition minutes

 Dear watch aficionado.

Today I would like to present you another very special timepiece made by Derek Pratt for Urban Jürgensen: A calendrier perpetuel, répétition minutes, subsidary dials and pivoted detent escapement.

This example is the only perpetual calendar combined with pivoted detent escapement.

Kind regards.

Christian

www.watchcollector.lu