Since buying my 01B, this watch just collects dust. As noted, it's a K series Explorer II, black dial with all boxes and papers. Accuracy of the 3185 movement is very good, running consistently at +1.25 a day.
Prefer a Canadian sale. Watch is located in Ottawa, Ontario and I'm happy to meet at an AD to verify authenticity or get an AD to write up a note of authenticity at my expense.
The watch is in outstanding condition. I would rate it at 95%. I have a boat load of references. Brand new ones are CDN$7000 all in... save your money and don't get caught at the border importing one from the US.
Email me at firstname.lastname@example.org