2531 Class 25/3 - D5244 BR Two tone Green with small yellow panels Diesel Locomotive - WeatheredThe model represents the final development of the 478 Derby Sulzer Type 2s, which started with Class 24 in the late 1950s. This model will cover the D5238 99 and D7500 D7677 batches, built by Derby Works and Beyer, Peacock of Manchester between December 1963 and April 1967. For the first time, models will also be offered as the famous Scottish Region ETHEL (Electric Train Heating Ex Locomotive) train heating units converted from Class 25 3s as a short