Metropolitan & Great Central Joint Committee enamel Caution Notice. 'No Vehicles Must Be Allowed To Pass Over This Weighbridge Except For Weighing Purposes. The Weighing Of Self Propelled Vehicles Is Limited To 4 Tons, By Order'. White lettering with black shadow on a red background. Ex Amersham Goods Yard. Extremely rare and not seen before. Excellent condition with just minor corner loss top left and right around the boltholes.