On 30 Apr 2005 20:04:37 -0700, wrote:

For auction, a heavy cast bronze horn from a 1940s tug boat.
Manufactured by Cunningham Air Whistles of Seattle, WA, Model 3H. It is
made entirely from bronze and brass, diaphragm included. Works
perfectly, amazingly loud.

http://cgi.ebay.com/ws/eBayISAPI.dll...tem=6529172594

I had two of these mounted on my Zimmerman. Very loud.