This wagon started life as a low side ballast wagon with the Wellington and Manawatu Railway Company as BM1. When the WMR was taken over by the NZR it became M1573 and later E1143. In later life it carried a 2 ton capacity hand crane #263, likely last based at Eastown before it was written off. It made its way to Hutt workshops and was used there as a place to store parts off locomotives that were being overhauled. It was purchased by SSR in 1982 and moved there by road. It was never used except for storing spare Standard railcar motors. It was finally moved undercover in 2017.