Want to Buy WTB: Seiko (or similar) main spring.

Hi all,

It seems the shutter main spring of Hexanon 90mm 3.5 had enough after 50 years on a self.
The shutter is a Seiko %0 but I guess any similar will do.

if you have a spare or shutter that you might let it go I will use have back to work a nice Koni Omega.

Thank you,
Alex