I am after a horn button in good condition.Will pay good money for the right part.

NBturbo,
Contact Koch's for a horn button.

http://www.kochs.com/contact.html 

Talk to Rubin if you can. He know's his stuff. Also tell them you want a standard horn button. Not the ivory deluxe one.
Erich

Erich,
I thought by your chosen user name it might be you...the new guy on the block from the US here @ Aussieveedubbers!!!!!
Welcome.
Why don't you tell our Aussie mates a little about yourself and your project (which turned out beautifully, by the way), in the new members forum?

Hope to hear more from you here!

Regards,
Steve