my visoflexII would not fit without changing Novoflex rings (still available new from the Memmingen factory!) and the mirrorbox plus LM to NZ ring would also hinder the infininty setting by lengthening the light path. Also, the analogous sliding mount that leitz used for these Telyts plus for the R´s has a different thread on the glass component.
An extra superfluous(?) "mechanical" feature in the illustration is that the sunshade is covered with leather (according to the original Leitz brochure, to avoid scratches to the metal finish - when supporting against a tree or such).
p.