I would think a model of each type or style of Fresnel would be most logical. I don't think one of each size would be too practical. If the first lens is supposed to be a 5th order, a 1st order to the same scale might make Navasink look small. I would like to see a clamshell and a bullseye to go along with the beeive. Keep the edition size small, as Tim noted, to keep interest up. We'll find one if we want one.

Dave