Our model maker Allen had these sitting outside the shop drying and I snapped a few celphone pictures of them. These are masters for our new 28mm (1/56th) modular trench system that is specially designed to accommodate figures that are on 1" (25mm) bases. I think these would work great for 20mm minis also if they are on 1" bases.
Allen says he will be making the molds for these in the next few days and they should be available next week.

Hope you enjoy these. Your shop spy, Haden.