NG1 - Sarge - Trolly Trailer Named Sarge as it originally had three safety chevrons on the back that resembled Sargeant's stripes.Puffing Billy Railway - Narrow Gauge Track maintenance Vehicle - Trolly TrailerNG1 - Sarge - Trolly Trailer made of Steel and MetalNG1 - Sargepuffing billy railway, pbr, rolling stock , ng1 - sarge - trolley trailer, trolley, trolly