Ive a Bob Jackson fixed gear made in 2001 with the older version - what youre calling MK 1 - including a NP-BB. Ed litton spotted the difference right away and we wondered where these had come from.
Jackson's had reportedly bought a small stash from someone going out of business. Supply reportedly dwindling then.
Pics not posted anywhere, but email me and Ill send them, if your interested.
Tom Rawson
Oakland, CA