Trev,
Thought you might appreciate this (being an anorak and all) disk I got with a Honda 400/4 I run, its from 1977 so its not quite as good as a first year disk but its not bad!!
This proves you can be younger and also an anorak. 
Cheers
Dan
[IMG]http://www.cb1100r.net/forum/attachment.php?attachmentid=1412&stc=1[/IMG]