As-Delivered GP30 Horns

[NW Mailing List]

Hello, while looking at early photos of GP30's I've noticed they had a different horn arrangement than they had in later years.  It seems on one side of the cab there was a 2 chime horn and on the other side maybe a single chime, I'm not too sure.  What type of horn was this, and how long did most keep this arrangement before switching to the standard Leslies?

-Evan Miller