Thank you so much all!
Eva, if I could figure out "what a Wild Wild West Meets East/Edwardian Naturalist type would pull in for outerwear" I think I would consider all my life's problems solved. OK not really. But almost.
JAileen, that's what I"m afraid of, that it will be much cooler than everyone is telling me ...
Astrid, thank you so much for your detailed feedback. I *was* thinking of getting a raincoat (I need one anyway), but will reconsider. I'm still sorting out my footwear too - I think I'll need to purchase a new pair of leather walkers - hopefully I can find a pair that doesn't look too much like gear. My memories of Europe (from the the 70s when I was a child!) are cobblestones, and so I'm worried about anything with a heel or even something like Danskos which tend to turn at the ankle. I'm thinking plain black leather Merrills or Keens, which are not high fashion, but which my feet love.
anchie, you collage of toppers is incredibly useful, thank you! Maybe I will bring my leather jacket after all ...
Laura, transitional/temperate weather (fall/spring) is almost nonexistant here, and every year, I find myself struggling to dress during the one or two week period we have ... this trip is forcing me to really invest in a few appropriate things that, hopefully, will last for years. I agree with you about closed shoes, although I might bring one pair of comfortable sandals to wear with a dress.
Gaylene, that's good advice, I think I was already anticipating too many silhouettes (boyfriend jeans and skinnies and flares) - I will probably stick with long(ish) over lean(ish).
Thanks Angie, you are reassuring me that it wouldn't be nuts to bring a leather jacket. Husband (who is in various European cities often in September) tells me I won't need it, but he is a polar bear, plus his leather jacket is a heavy duty thing meant to replicate what WWII bomber pilots wore for flying missions, so I think I'll trust your advice over his on this point!
Wheee, so much fun planning and anticipating!