Posts 345 Likes 1,172 WestCoastTime ·Aug 3, 2021 Hamilton 917 mainsprings, old & new. Old is probably around 80 years old. New is from Bestfit (& missing one half of the T-end :-p ).
Posts 29,819 Likes 77,174 Archer ·Aug 3, 2021·Omega Qualified Watchmaker It's also not laying flat, so I would try to correct that before you use it.