Georg, thanks for the background on these one meter gauge steam locomotives.  I love that they represent 5 separate railways with their historical info.  The most amazing part of this photo is that each of these "Steamers" seem to sport headlights & ditch lights.  I haven't ever noticed ditch lights on Steam locos until in this photo.  Thanks for the great catch.
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Hi Steve
3 Headlights are common in Switzerland since the old Steam days. I don't know when it became mandatory though. I think it was to be able to tell the difference between rail and road vehicles.
Felix
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Felix, thank you for the update & for teaching me about my Swiss roots.  You are a font of knowledge.
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