I have admitted that I'm addicted to telegraph keys and, so, I'm interested in any that are interesting or rare. However, there are two that I especially want to find.
Vibroplex: a 1948 Original Presentation. This would be the original model with gold surface. It's serial number would be in the range 156,884 through 161,353.
Bunnell: a 1918 Triumph with the "Bunnell S" logo stamped into the lever. I already have the steel-lever-pattern key with this marking, but would like to have a Triumph. If you have one of these keys and don't know whether or not it's a Triumph, I can help you with that.