Worksplate, Hunslet Barclay Sons & Co Limited Caledonia Works Kilmarnock No 6301 Rebuilt 1996. Andrew Barclay and their successor Hunslet-Barclay used a separate series of works' numbers for other than new build locomotives which usually started at 6000 before finishing at 6999 and then going back to start again at 6000. This also include the rebuilding of locomotives. However records are incomplete and not all numbers are identifiable. Regrettably this number is one of them.