Hi. Other than the barring on a couple of the leaves, I'd
swear I was looking at a 'Jade Dwarf Marginated'. Correct
green color and wide yellowish margins. But 'JDM' does not have any barring, green should be solid. So, I guess this is a 'Hahnii Marginated, but to me it is even more non-typical of this plant. It should actually have more barring as in your typical trifasciata, and more narrow margins. Your plant looks more like a 'Jade Dwarf Marginated' to me, with some extraordinary barring on some leaves. When you get Chahinian's book, check this out.
Great picture.
Russ

Hi Russ, I'm looking at the photo of S.t.h. Marginated in Juan's book as I type. And looking at my real plant, I see more banding than is visible in the photo of my plant (above). On my plant the newer leaves have more pronounced differentiation. Bottom line, I am confident my plant is "Marginated"

Wow that's a really pretty one!