David Wade wrote:

Give a try at:
http://www.horton-brasses.com/
Check out the viola box locks. They might work for you.

You can also check:

Ball & Ball - http://www.ballandball.com
Van Dyke's - http://www.vandykes.com/

--
Jack Novak
Buffalo, NY - USA
(Remove "SPAM" from email address to reply)