Worksplate, cast alloy, Andrew Barclay & Sons Co Ltd., numbered LWDMU 690 dated 1985. Ex 4-wheeled DH 230Hp Pacer Class 143, 2-car sets numbered 143601 to 143625, AB numbers 669 to 718/1985 to 1986 If plated in sequence this is ex Set 143611, Cars 55652 or 55677. The initials stand for Light Weight Diesel Multiple Unit. Bodies were built by Walter Alexander of Falkirk and the Underframes by AB.