Prototype: German Federal Railroad standard design signals from Era III on.
Model: Semaphore / target signals with semaphore and target movement. Integrated train control feature. Below-baseboard mounting with simple assembly. 2 aspects "Stop Do Not Proceed" (Sh0), "Ok to Proceed" (Sh1). Movable lens, 1 light bulb, and below-baseboard mechanism permanently attached to the signal. Height 26 mm / 1".
