Angel Wing ID please?

I recently bought this angel wing at a local nursery. I said "I need a name", she said Angel Wing begonia, LOL

I said I know that but what is it's name?

She didn't have any idea. A nursery that has been in business forever doesn't even know what they are selling???

Anyway, thought I would check with the experts and see if you can tell me a "name". ^_^

As you can see the underside of the leaf is completely red and the top is white and dark green. Just lovely!

Thanks for any help you can provide.

Susan
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another picture
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I think that is Looking Glass.

wow that was fast!
Thanks!!
Susan
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Does look like my looking glass begonia, it's a very nice one, quite easy to ID too