Despite its very formal design, this watch has been fitted with an exceptionally large and robust movement. The Valjoux VZ series is 13 lignes (about 29.5mm diameter), and has been around since at least the 1920s....
Patek Philippe 2458 Observatory Chronometer for JB Champion @ Christie's
Patek Philippe 這只天文台競賽錶款,其實同期在1948年那時AP也有
Watch Castle Of Time / Office Agents
Photos / NAKAHIRO @ Vintage Watch Movement & Watchonista Blog