Hello Colin, Just to clarify, I am a big fan of A1/ A2/ A3/ A4 Loco's. Based on your description I just checked the TMC sale section, only A1 they have for sale is, Knight of thistle. It is A1 model and at nearly 50% off, it is a bargain, although this with different name plate, am I to assume same Loco (R3989) as yours Doncastor? Regards