Atlas air filter

I’ve come into possession of a ‘64 atlas and am looking for a factory air filter for it. Mine is still equipped with the twin monoblock carburetors- I have the original clamp plate and one screw on carb adapter but the rest of my filter has has its sides trimmed and a cover welded into place, so one can’t ever renew the element.

Has anyone out there got a spare they would be willing to part with?