Hmm. Looks like it might be Wild Pony.

Or Cowardly Lion.

Looking at what I bought and comparing it to the images found at the ABS website, I'd lean more toward Wild Pony. The veins are deep purple. Cowardly Lion looks more of a scarlet or rust.

I have both and while they are similar, Cowardly Lion is more yellow and brown, while Wild Pony is darker with black tones. I will try to get a picture of both together soon.

I think you'll see in the closeup detail I've linked to that this variety is dark green with deep purple veins. More likely Wild Pony than Cowardly Lion.

Here is a link that might be useful: Close up detail

Both can have double spirals but typically it is a single spiral. I was referring to color mainly. Anyway it doesn't make much difference since both are nice additions to any collection. Here are some pictures from the last year or two of both.

Wild Pony:

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Young Wild Pony
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Cowardly Lion
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Note the double spiral on this Cowardly Lion
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Another double spiral on C.L.
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Yes, both are breathtaking! Though I've never been a big fan of miniatures, I picked up a couple yesterday (Five Dime and Sierra Silver Rose) that shimmer with silver leaves. Bought them at the same place I found the Wild Pony, in fact. The attendants didn't really know what they had in begonias. I hate it when they point me to the waxes! They're already on my begonia gallery page:

Here is a link that might be useful: Fred's Begonias