ST/Guilford/Pan Am GP9 #52 Second Heritage Unit

Photos are starting to show up of the recent "heritage" repaint out of the Pan Am Waterville shops.  This time, it is ST #52 in dark green Maine Central livery.  ST #77 was the first unit to be painted in a retro scheme, the classic maroon and gold Boston & Maine version.  Word is there will be a third as well.  I wonder how many mis-posts there will be of these engines as "BM" and "MEC", instead of Springfield Terminal?