OK, so pretty much as expected.
16:9 until the Good, The Bad and The Ugly (Ha Ha - only laugh if you got the joke) lock up the station master, then 2.35:1 until that train arrives, then back to 16:9, but anamorphic all the way (if you're watching on digital)
Why do they bother?
Anyway, on a lighter note, although some of the titile sequence clearly uses a fake fly on a string, HOW IN THE HELL did they get a fly to dance around on Jack Elam's face?
Presumably, it was an Italian fly to have taken Sergio's direction so well?
Or maybe they had an english speaking fly to translate?

BTW the print looks old, even in anamorphic. I trust the DVD will look a lot better that this. It had better!!!)