On the way home tonight I stopped by a local DAV Thrift Store. Look what I found for $4.95!!!!!!

Here's a close-up of the marking.

This thing works (it has a duck call in the chrome mouthpiece), and is about 16" long. The marking reads:

"Captain's Fog Horn from the Colorado Belle, Laughlin, Nevada Circus Circus Enterprises Grand Opening July 1, 1987"

Sure got me excited!

Jim