Just wondering....

Anyone ever create (or made commercially available) metal and/or (thin) glass MF mounts?

In my mind, these may protect the film better and would at least look more substantial from a gallery - collector - sales perspective.

(FWIW, I recently had a few galleries interested in seeing or displaying my MF work. While I know others have been OK with commerical mounts, I still have a mental barrier to handing over cardboard / plastic mounted pieces to potential collectors.)