This was purchased as Argyroderma fissum "Litorale". The "Litorale" part is from Argyroderma litorale which is a synonym for Argyroderma fissum (the current accepted name). Therefore, it's just Argyroderma fissum.
It has the widest distribution of all the Silver Skins and the flower colour varies considerably. It's a wait and see jobby
Purchased as A. braunsii it's actually A. fissum. Other synonyms for the plant are Cheiridopsis braunsii and Roodia braunsii so to get them all on I'll need a much larger label. It has more aliases than Smith and Jones.
The A. fissum posted above ( Post #3) had problems regenerating this year. Even after I performed a Caesarian it faded quietly away