Thanks Patrick.
Yes, I fully understood from Fran's (@Warbonnet) post IRM would be 'bang on the money' and accurate to evidence of past liveries via photos, etc, and I now understand IRM's A23r will have the lower stepped band. Please forgive, perhaps I should have phrased my query more clearly. It seems there were two variations of height on the high (i.e. non-stepped) orange band applied at different times on all B&T A classes. My query was simply which of the two high band variations have IRM chosen for A15?
Cheers
Noel