Here is a link to a useful site, the photo I've attached shows a CWS built FT with pressed plate track. Centurian has previously posted this photo
Edit 05/05/12 - thanks Rectalgia
http://derela.republika.pl/en/ft17.htm
Photo of an FT that is in this 1939 album, rear view also in album.
http://www.ebay.de/itm/ws/eBayISAPI.dll?ViewItem&item=221036737034