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Photo credit unknown.
Good information, Number 90. My small amount of research has found that some of the earlier Q SD's had only one mars light high on the short hood (in Don Ball's Portrait of the Rails, there is a two page spread of a Q caboose hop with two SD's configured that way). And C&S or FW&D had SD9's with mars lights affixed the way they were seen on Q SD24's and all GP's. What my MTH road switchers lack is that Q profile of mars lights above the regular headlight. That two page Don Ball photo I referred to is one of my favorites, and the photo is dark and lacking contrast on the locomotive paint, but it best captures that CB&Q profile that I love. To me, it's the same with ATSF Ce- cabooses...they have that Santa Fe outline that some other roads' cabooses had yet are often referred to as "Santa Fe styled" . I mean, you can't take some NEastern sloping cab caboose with porthole windows, slap red paint and a Holy Faith cross on it, and expect it to look like the Santa Fe. Right? Not for us, anyway.
I don't think I would be picky about hinge detail if I could simply find the correct shape of light casting to add in the proper position for those "undressed SD's". It would be so nice to stumble onto the same detail parts that 3rd Rail used to make their Q SD9's.
The correct spark arresters also plays a part in this thread.