Remember that Toshiba Tsunagi (aka TG-01) running Windows Phone 7 that was on sale over at XDA Developers a week or so ago? It looks like it didn’t sell as the phone (or another one) ended up on eBay.
Aside from the screen which is resistive and not capacitive, the Tsunagi has what it takes to run Windows Phone 7, just like the HTC HD2. Whether Microsoft used the TG-01 as a test device is not known but if you want a rare device for your collection and have around 110 euros (roughly $160), you can grab the phone from eBay. As always, careful when buying from the Internet (in general) and especially when you’re into buying stuff like this.