I asked on Norbos forum and it seems the 80 models had them but in 81 moved to plastic tops, and we never got 80 LCs...
But I had an 82 with one... hence why my 421 has one on it....

Or did we get them on some of our bikes as part of the JDM overspill dumping ground we had become at that time?
Anyway, do let me know what you have on yours as Id like to know if Aussie bikes did get them or not.
(and of course if anyone has a spare they wont use.....

For those who dont know... the LC cap is on the left in this pic (this is a plastic one), right is RZ and superceeded LC part number.
