block signals

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    Inquiry - AHM - Plug-a-matic Block Signal System

    Help requested?: I am trying to locate any and all information regarding the AHM Plug-a-matic Block Signal System. It looks like it was originally made by Rivarossi - all parts and boxes have this logo. Some of the product numbers include: 2585 / 2685 The Plug-a-matic is discussed on...




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