Like I posted, my first thought was C. moehlmannii, a plant I am currently growing, however the leaf on the mystery plant is much smaller than the C. moehlmannii leaf and the root structure seems a little un-Crypt like. The root is not the thick, fleshy root I would normally expect to see from a Crypt. Rather it is finer, more hair like.
Guess we might have to just wait this one out!
Mike