N gauge society kit available from the 2mm Association.
Parts:
Prototype
425 built (diagram V7) 1906-1907. Vacuum-fitted with wagon brakes, DC II.
98 similar built earlier (1904-1905) as Mink B, later reclassified as Mink C. Sliding doors (indistinguishable from normal), probably different end ventilators - initially none, later single bonnet, rather than double louvres with sliding cover on kit (V7).
Additionally there was a similar earlier Mink B of greater capacity (18 tons against 10 tons, 8' height against 7'6") - 6 built in 1903-1904.