Heljan 2547 BR Class 25/3 25301 BR Blue With Domino HeadcodesHeljan 2547 BR Class 25 3 25301 BR Blue With Domino Headcodes This model represents the final development of the 478 Derby Sulzer Type 2s, which started with Class 24 in the late 1950s. It covers the D5238 99 and D7500 D7677 batches, built by Derby Works and Beyer, Peacock of Manchester between December 1963 and April 1967. It features the renowned high performance chassis with all wheel drive and all wheel pick up, illuminated headcode panels and