Items listed here where made by Lionel from 1945 through 1969.
Boxed Lionel 151 Semaphore Signal
Boxed Lionel 151 Semaphore Signal
Here is a Boxed Lionel 151 Semaphore Signal, 1950s. These are used to caution right-of-Way for main lines and switches. They can be wired to have the train control the start/stop of the trains, even run two trains on the same track. It is clean and lighted when tested. It has its instructions, 153C and 3 wires and shows light play wear with box, EX.