Signals
![Main Line Signal 121](https://www.irm.org/wp-content/uploads/2024/05/signal121-sm-150x150.jpg)
Main Line
Signal 121
Signal 121
Description: | Semaphore |
Equipment Information
Manufacturer: Union Switch & Signal
Style: Upper-quadrant semaphore
Model: B
Configuration: Dual head
Railroad:
Condition: Complete / restored / operational