Hornby 0 Gauge T20M Transformer Post-war, black case – Boxed – to be used in conjunction with a speed and reverse unit. This is a post war version of the standard 20 volt transformer but will need spped controll unit but has some addition label to the box details the speial detail about this transformer. The Transformer has a 3-pin Plug fitted which I have cut off. PLEASE NOTE – This transformer has ‘NOT’ been tested and is sold as a vintage none working item – All these 1930’s transformers will need to be checked and wired by a qualified electrician. Overall Excellent in the original box.