Herman,
One of our members, Wim from Holland, has replicated these, I have them on my bike. They are beautifully made and look pretty damn original. An absolute pedant would spot the difference but the rest of us would remain ignorant.
His member details are here: http://www.cb1100r.net/forum/member.php?84-WimR – click on the send message and he will be able to give you details if he has any left.
Good luck
Andy