Again, Barry Carse's book is a great source of photographic information on the Maybach-engined - B233 (p 36), 233 (p 11) and 234 (p 6). The photos on pages 6 and 11 show the two locomotives in the CIÉ Supertrain livery, while the one on page 36 shows B233 in the black livery with yellow warning panel below and white chevron above the front windows. The chevron is noticeably slimmer and pointier at the top when compared to those on the GM engine locomotives, where the white area had to accommodate the headlight.
A point of interest is that the circular porthole window at the No.2 end on the right-hand side, which was there in C class days, is blanked off on both locomotives. On the other hand, locomotives which were re-engined with GM engines retained this window. Did the window re-appear on 233 and 234 when they were fitted with GM engines?