Looking for budget leaf shutter recommendations for a camera build

Can anyone recommend a budget leaf shutter to me with a clear diameter of at least 30mm and speeds of at least 1/125?

I am thinking of building a simple 6x9 camera. It's a Wollaston landscape lens with a forward aperture stop and single element behind, so the shutter would go in front of everything else including the aperture.

Would I find a better deal by taking the shutter out of a lens or cheap camera rather than trying to buy it standalone?

I have a similar lens in front of me. The front of the lens is maybe 35m however there's a restrictive stop above the aperture blades, I could probably use any Compur/Prontor #0 shutter in front without an issue. MAybe a #1 would be better.

Ian

Thanks. It looks like the Copal #0 size will work. There's a Prontor SVS in that same size originally designed for a 127mm f/4.7 lens for a Polaroid Pathfinder. Speeds up to 1/300. I think that might be my best bet as it also has an aperture that I could use as well.