M.E.P. Art-Deco replacement slip shades for close chandelier B323

I have 5 lovely slip shade replacements for an M.E.P B323 slip-shade close chandelier. All 5 are original and in very good condition. These were made by Markel Electric Products, Inc., in the early 1920s. The firm's name was changed to "Markel Electric Fitments, Inc." in 1923. These opal glass shades slip into an aluminum basket frame. (The last three pictures show what a complete M.E.P B323 looks like). Only the individual slip shares are for sale.

I have 5 identical pieces for sale, all in excellent condition.