Some pics of Original French built BBM-1 class(builted by SNCF) whose nomenclature was later changed as WAG-1/WAM-1( mostly I have no idea regarding this whether it was changed to WAG-1 naming or WAM-1 naming)
(Screenshots taken from a video I found in Youtube)
YT Video (From where I took the pic): HuntleyFilmArcheives
Link is also provided( Note: The video is in muted)