Making The Escapement, Remontoir, And Timing For Derek Pratt’s Reconstruction Of John Harrison‘s H4, The World’s First Precision Marine Chronometer (Part 3 of 3)

Sorry. I am looking for my school friend, Martin Dorsch, a German watchmaker from Regensburg. If you know him, could you forword my contact possibilities to him. Thanks! Junwoo JEONG

Am Waisenhausplatz 4, 75172 Pforzheim, Germany

Email: [email protected]

Tel: 0049 (0)174 76 35 227