The Marshal II Power Control Unit by Meccano Ltd is a vintage speed controller made in the United Kingdom in 1970. This pre-built, analogue control system operates on DC power, with an average output of +/- 0 to 16VDC and 16VAC. Made of aluminium and featuring adjustable forward and reverse functions, this green-coloured control unit is a rare find for collectors of model railways and trains. With its double insulation and 8W wattage, this classic piece offers a reliable and unique addition to any collection. In original box. Box in good order still intact but please see all pics before buying. Good Luck and please check out my other items as new stuff listed regularly.