Appropriate model of Z typ CIWL WL car in era IIIa is difficult to find (I wonder if it exist).
LS Models 49215 (era IIIc) could be the compromise because of its livery acceptable for era IIIa.
The only “thig” we can make is to paint those white marks on the bogies in black to make the model more adequate to era IIIa.

Very nice composition, one of my favorite.
