Rev.1 has foam headband, Audeze printed on the metal grill.
Rev.2 version 1 is Rosewood, has leather handband and doesn't have plastic angled connectors.
Rev.2 version 2 is Bamboo, which is what you have, can come in dark or light shades in colour but the drivers between all rev.2's are all the same, the reason they used a different material for the housing is because the Rosewood versions are prone to cracking near the headphone jack area (although not all have this problem, just inconsistencies through the batches).
Just to clarify. There have been confirmed instances of Rev 2 serials with Rev 1 drivers.
And Rev 1 serials with Rev 2 drivers.
So the only conclusive way to know which you have is to check with Audeze.