Colin,
Many thanks for that. Parksy is aware of my e mail address from previous correspondence, so maybe he can oblige.
Does this mean we can start a sub Forum of train buffs? Then we can really bore the pants of everybody. However, as a confirmed buff myself I do not care, although I never really bothered about collecting numbers. However, my children do remember with horror I may add, a holiday a long time ago, when I dragged them round all the small railways in Wales. Of course it rained virtually all the time and my daughter, now aged 34 but aged 8 then, never stops reminding me. But I enjoyed it. My wife is very understanding however, and keeps buying me train and tram models but I admit my ambition is a 5" gauge real steam loco. 50 kg of hot steamy iron hissing away. Sounds like paradise. Maybe one day.