Zenith setting lever spring cal. 18-28-1P 18-28-3P / part 445A

Zenith set lever spring for following calibers :

Only for 18-28-1P and 18-28-3P (not for 18-28-3A  , nor others versions)

Ressort de tirette / part 445A

Semble neuf de stock, état parfait / Probably new old stock , mint condition