Performs overhaul and exterior finishing. Watchmakers has a slight scar, but excellent condition otherwise. Belt (external product) is feeling slightly, but is relatively clean. Buckle is fitted. Inside the box degrades due to secular.
It is based on the masterpiece chronograph movement made by Zenith, "El Primero" calibre 36 with クラシックモンツァ. You can see the elaborate machinery from the case back.