I am unsure whether to post this here or in the the Prototype section. My model railway is based on BR in late 1959, and I strive to have all locomotives and rolling stock correct for this specific period. I recently purchased the Bachmann Class 108 DMU believing that these units were introduced in 1958. The brief history provided with the model, however, states that only the final 29 sets had the 4 digit roof-mounted headcode, as per the model, and these were introduced in 1960/1. Reference to the Ian Allan abc combined volume for 1960 seems to confirm this as the running number of the model M51928 is not listed (the last listed being M 51923. However, there is a photograph in the same volume of a DMU that appears identical to the Bachmann model (roof-mounted 4-digit headcode; speed whiskers; identical front, not certain but appears same window arrangement on side). I presume this was before the Class number was established, as the caption reads simply "Derby-built two-car lightweight unit". It is impossible to decipher the running number, although it does appear to be prefixed M. As this photograph appears in the 1960 volume, I presume it was taken no later than 1959. What knowledge I have is largely restricted to steam locomotives and early diesels, and I wonder if there is anyone more expert in DMUs who can suggest what class might be portrayed in the photograph, appearing to be the same. or very similar to, a late Class 108? The Bachmann model is excellent, and I would dearly love to be able to renumber it, if this might make it faithful to the late 1959 period of my model railway.