Here is my prized collection: Working Mars light model, 250R, saved it from scrapper's torch at Alter's at Council Bluffs, Iowa. ...
this is the model we're trying to make in 1:8 scale for a Jim Kreider NKP Berkshire design. the case casting is available and Jim has the mechanism working in SolidWorks, but now the parts have to be cut...
the actual NKP 753, unbelievably the cover photo on a recent calender.
as you can see, the NKP used a clear lens MARS light. talking to local residents who saw this locomotive in operation, even during daylight hours, it improved the visibility of an oncoming engine.
i for one would like to see 765 refitted.
i understand it is still in storage.
cheers...gary