SWB617 and Henning were not only fully loose in the shuck but some of the shucks had started to open (see photos at the bottom of this post). In contrast, I had to use a knife to remove the shucks on Warren 346 and Canton and did not find any nuts on the trees with split shucks. This photo also reveals that all four of these early-ripening cultivars needed additional drying time to develop their full shell color.
Even though I was able to cut the shuck off the Mullahy nut, shuck was still tightly attached at the very base. Osage and Peruque had started the shuck separation process but the white coloration of the shell indicates these nuts have only recently separated from their shucks.