The Black L1 was a first generation L1 with a Luxeon I and a NX-05 optic.
I have 2 black L1s, but they were modified by Mc Gizmo.
They are now 2x123 with PR-T heads. One is a Luxeon III (TWOJ I think) driven at 917ma and the other has a X bin luxeon V driven at 750ma.
For the members that don't know, "PR" stands Pelican Reflector and I think the "T" stands for Trim, because the first PR heads were larger and a later version was trimmed down a little. I also read the "T" stood for Turbo, but Trim seems more appropriate.
McGizmo no longer makes these, but I think he made about 50 of these in the normal hard anodized green color with a Luxeon III.