Hi all,

Lucky me I have the chance of testing a lot of lenses prior making the shutter work and lens cleaning.
Here we have a Koilos shutter, no serial number but the lens is a Tessar SN#123452, pretty old (1909/1910)

The shutter didn't stay cocked, here you have the link if you want to see the process.


Special attention to the tightness of the screws, I couldn't do the cleaning I wanted, after I shoot with it I will come back to it.

Thank you for watching.