![BrickLink - Part 7864 : LEGO Electric, Train 12V Transformer for 220V - Type 3 [Electric, Train] - BrickLink Reference Catalog BrickLink - Part 7864 : LEGO Electric, Train 12V Transformer for 220V - Type 3 [Electric, Train] - BrickLink Reference Catalog](https://img.bricklink.com/ItemImage/PL/7864.png)
BrickLink - Part 7864 : LEGO Electric, Train 12V Transformer for 220V - Type 3 [Electric, Train] - BrickLink Reference Catalog
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BrickLink - Set 7864-1 : LEGO Transformer / Controller 12V [Train:Supplemental:12V] - BrickLink Reference Catalog
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Anyone know the secret history of the gray era 12v/4.5v system? - LEGO Train Tech - Eurobricks Forums
![Lego 7864 12V Eisenbahn Trafo komplett mit Bauanleitung und Originalverpackung (55), € 55,- (1220 Wien) - willhaben Lego 7864 12V Eisenbahn Trafo komplett mit Bauanleitung und Originalverpackung (55), € 55,- (1220 Wien) - willhaben](https://cache.willhaben.at/mmo/5/625/097/295_-71899054.jpg)