A 2001 lens has popped up on ebay, interesting if nothing else! Wonder if there are any more bits.?
http://www.ebay.co.uk/itm/1210693775...84.m1423.l2649
If I haven't already sent you this BBC TVC link, here it is again.
http://www.youtube.com/watch?v=zTqWBEbBxZw
regards
Brian
www.tvcameramuseum.org