Seiko Ersatzteil 565901 – Sekunden-Herzschnecke für Stoppuhr Kaliber 9011 – NOS Quarz Millions of units were produced

Millions of units were produced from 1968 onwards

Urushi dials are handmade: color and texture vary slightly – each piece is unique

der seit den 1950er-Jahren für Seiko und Citizen arbeitet

Original Citizen replacement dial

Seiko Ersatzteil 565901 – Sekunden-Herzschnecke für Stoppuhr Kaliber 9011 – NOS Quarz Millions of units were producedOriginal Seiko spare part 565901 , classified as S part 687 , from unused old stock (NOS). This is the Heart Cam (seconds heart cam) for the Seiko 9011 stopwatch . This component is central to the reset mechanism of mechanical stopwatches and ensures that the second hand jumps exactly to zero when reset. This part comes from long term storage, is unused, and in excellent original condition. Due to the rarity of mechanical Seiko stopwatch parts, this