DB,
I have so far only seen a Campag keirin seatpost, the one with the NJS stamp you mention. From the talk I have heard, the period you mention is the only time in which the components were manufactured especially for use in Japan. When these parts do appear for sale, they are like mom's cookies hot out of the oven. On a side note, keirin has a strange regulation that if a frame hasn't been used on the track in three years, it can no longer be raced.
Dennis Young Hotaka, Japan
There was a Record Keirin groupset in the late '80s, technically OT, but I reckon that keirin stuff should get KoF status. Is this what you see in Japan, or is there also earlier NJS Campagnolo?
There were several differences from the standard Record Pista components: Front axle with 8mm flats Rear hub listed in 110 & 12mm OLN Hubs in 36h large flange only Bottom bracket with steel cups A variant of the 'ergonomic' pedal with a conventional axle/cone assembly Keirin setapost is the 2-bolt Record post with NJS stamp. Record Keirin headset- presumably in JIS dimensions.
DB
Auckland, NZ