Heljan O 8891 AC Cars Railbus W79977 in Dark Green with Small Yellows

Heljan O Gauge 8891 BR Western Region's AC Rail-bus W79977 in Darkt Green with Yellow End Panel. These pioneering single unit rail-buses were used on branch lines such as the Kemble to Tetbury branch off the Gloucester - Swindon line, having displaced ex GWR 14XX and auto coach workings.