Enamel Underground car identification plate, in the shape of a silhouette roundel, from 1938-tube stock car number 10179, 1938

Vitreous enamel plate, in the shape of a silhouette red roundel with lettering carried on blue bar, as carried on interior ventilation grilles at end of Underground car. This would have appeared on the ventilation grille inside a 1938-tube stock car.