Black hardware

I guess, it was the SO BLACK series. I am not sureif its is still possible to order any from Hermes, but you can look at resellers or auction houses. Comes in Matte Nilo, matte gator and box leather.
There show up once in a while.
 
You can't get B/Ks with black hardware directly from Hermès anymore but there are some accessories this season with black hardware. So Black bags tend to go for a significant premium on the reseller market, but they do show up with some frequency.