They aren't common. I've never seen one, let alone had one.

But I can calculate, see two possibilities. Two shutters (Ilex #5, Compound #5) have diaphragms that open wide enough for the lens to reach full aperture mounted in one. Of the two, the Ilex is easier to find. It might be possible to have adapters made to hold the cells in either. Expensive, though. The alternative is to have an adapter made to hold one of the shutters in front of the lens. Mounting it will require a flange, a board, and perhaps a crutch to support the lens.

I don't know where you're located. If you're in the US, discuss with www.skgrimes.com.