Hi....I am hoping to get some advice from the forum members
I am looking for a brass 8x10 barrel style lens with either rotating aperture or iris
I have an 8x10 wood generic European field collectors camera “Chambre De Voyage”
My lens board opening has a diameter of 57mm (2 1/4")
I am looking for a suitable and affordable lens.

The only advice I have been given so far is this:
A well known lens maker (Derogy, Darlot, etc.) would work but is not important because these were inexpensive cameras. The lens formula would more than likely be a symmetrical rapid rectilinear design but most any brass barreled lens covering the 8x10 format would work. It’s important to make sure a lens you’re looking at includes the brass flange

It would help to know a specific 8x10 brass lens with a 57mm diameter which would fit my lens board

Any advice is much appreciated.
Thanks Nelly