I just bought this lens a few months ago but due to a focusing issue I had to send it back to leica for an adjustment. I am going to sell it so fund another project that I am working on right now and to free up some cash. It has been used maybe 5-6 times and is practically like new. It is Black and yes it is 6 bit and yes it comes with the boxes and certificates and papers etc. Just like a new one would. I am asking $3500 shipped in the US. Please add 3% for paypal or use gift option. Any questions please let me know.