On the Pennsy brick towers were used along the line at busy junctions

Transformer controlled forward

bridges or tall buildings they are meant to serve as a warning to aircraft that there is something tall below them

24130 track

smoking or non-smoking

Marklin 70411 HO Home Signal with Narrow Mast VariantsUnitPrice_number_264.02 On the Pennsy brick towersThis is a Marklin, Inc 70411 HO Scale Home Signal with Narrow Mast. Condition: Factory New (C 9) Operational Status: Functional Original Box: Yes (P 9) Manufacturer: Marklin Model Number: 70411 Road Name: **** No Road Name MSRP: $160. 00 Scale Era: HO Scale Model Type: Accessories The Trainz SKU for this item is P12113022. Trainz Product Id: 12113022