Tropicals & Tender Perennials: Too many begonias, 1 by Calif_Sue

Calif_Sue wrote:
Ohh la la, very nice looking Black you have there!

Can I jump in here for possible ID help? Never quite trust Ebay sellers to label things correctly.
This one was shown on the auction to be 'Concord-Chocolate', (seller has it in a current collection again) which it isn't of course as Concord is a cane (I think). Not shown too clearly here is a faint stripe down the center of the leaf. It's a trailer