Moved this from Noel's paintshop thread where it was an aside
Finally found one (that I had seen before and did't realize the significance of it at the time). 18829 in the light? green, black chassis, some letters under the number likely P&T and something else, illegible, Limerick, c. 1962. It's not mine to post unfortunately. As JHB said, he has photos to post in an upcoming book