![Anyone know the secret history of the gray era 12v/4.5v system? - LEGO Train Tech - Eurobricks Forums Anyone know the secret history of the gray era 12v/4.5v system? - LEGO Train Tech - Eurobricks Forums](http://www.brickshelf.com/gallery/LEGO-Train-12-Volts/Train-12-Volts/12volt-403.jpg)
Anyone know the secret history of the gray era 12v/4.5v system? - LEGO Train Tech - Eurobricks Forums
![BrickLink - Set 7860-1 : LEGO Remote Controlled Signal 12v [Train:Supplemental:12V] - BrickLink Reference Catalog BrickLink - Set 7860-1 : LEGO Remote Controlled Signal 12v [Train:Supplemental:12V] - BrickLink Reference Catalog](https://img.bricklink.com/ItemImage/SL/7860-1.png)
BrickLink - Set 7860-1 : LEGO Remote Controlled Signal 12v [Train:Supplemental:12V] - BrickLink Reference Catalog
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1 x Lego System Set Modell Nr. 7860 Ampel Signal Anlage Remote Controlled Signal 12v grau Train Zug 4707pb02 incomplete unvollständig | Steinpalast EN
![BrickLink - Set 7860-1 : LEGO Remote Controlled Signal 12v [Train:Supplemental:12V] - BrickLink Reference Catalog BrickLink - Set 7860-1 : LEGO Remote Controlled Signal 12v [Train:Supplemental:12V] - BrickLink Reference Catalog](https://img.bricklink.com/ItemImage/ON/0/7860-1.png)