The correct name for this trolleybus is FBW 51ZH/Tüscher/BBC. Trivia:
- the trolleybus has FBW Tr 51 chassis;
- the body was made by the Zurich factory Tüscher.
- only 6 vehicles were made.
- the two other FBW trolleybuses with ČKD electric parts, which operated in Zlin, had their body made by a local factory named Linie, Tousek & Co (Melnik). Their body was authentic to the Tüscher body. Their exact name is FBW 51TBS-WH/Linie Tousek/ČKD.
- operation: No.1-3; 6-8 (BBC equipment, FBW 51ZH); No. 4-5 (ČKD equipment, FBW 51TBS-WH)
- this website contains a bunch of lovely photos of this vehicle, including the interior view http://trajfly.wz.cz/Historie/hist_01.htm
- if you possess any useful information regarding this vehicles or want to know their specifications, do not hesitate to contact me!

Cheers!