starting point for SD100
Hi Peter,
Probably this won't help you too much, but nevertheless, I'd like to give this info:
Since I'm not an expert I try to collect some information.
For some North-American cities there was the Siemens-Duewag U2 (San Diego, Calgary, Edmonton). This seems to be the predecessor of the newer SD100.
However, they look quite similar (window are smaller, but the same position and number).
In the 80's there was an Austrian company MSE which manufactured the U2.
After some research I was able to find an auction on hood.de, something similar to ebay (of course, much smaller).
Here's the link to the current auction (still running 2 days). If you interested in this item, perhaps you could contact the seller concerning an oversea-selling.
http://www.hood.de/auction/33900463/mse-frankfurter-u2-modell-u-bahn-raritaet.htm
starting price in 150 EUR, buy now is 200EUR, but it seems to be that you could make an offer, too.
Unfortunately, all the text in the auction is in German.
I have to add that I haven't dealt on hood.de up to now so I have no experiences with it.
Might help you....
Regards
Norman