confermo...
cal. 920
28.0 mm x 2.45 mm, 36 jewels, 19,800 bph
Hours, minutes
Some implementations use an adjustable inertia balance
ecco i calibri in cui io sappia sia incassato il 920...
Production has transfered to
Audemars Piguet 2120
Audemars Piguet 2121 - date, 28.0 x 3.05 mm
Vacheron Constantin 1120
Vacheron Constantin 1121 - date, 28.0 x 3.05 mm
Patek Philippe 28-255 (no longer in use) - 28.0 x 2.55 mm
Patek Philippe 28-255C (no longer in use) - date, 28.0 x 3.15 mm
dai fabri... ti compri un bel mercator... e passa la paura [
]
ciao...