The refurbishment (re-bodied) of tramcars was implemented in 1986, one of the obvious changes is front & rear windows with radius corners in place of typical square shapes. Also note the resistor box being removed to the roof from the lower rear cabin and the upper glazing were extended almost to roof level.
Special thanks to degahk for valuable collection
Tram 89 is one of the fleets being refurbished from its existing frame.
A new miniature has nearly finished and is believed to be no. 139/159.