This is the first generation of Rheostatik Series, batch 1976 (on this photograph showed KL3 76112F
The next generation / batch is batch 1978 (Numbered KL3 78102F to KL3 78120F), have 3 doors and using mild steel body.
This is second generation of Rheostatik
Series, batch 1978 (on this photograph
showed an refurbish Rheostatik series
which called 'Rheostatik Marcopolo',
actually is KL3 78112F)
Another refurbish Rheostatik series which called
'Djoko Lelono 1', actually is KL3 78114F
An original second generation Rheostatik series, KL3 78116F
The next generation / batch is batch 1983 which are same like second generation (Numbered KL3 83102F to KL3 83124F)
This is third generation of Rheostatik series, the picture showed a third
generation of Rheostatik series, K3 1 83 10F (New number) / KL3 83110F
The next generation also the last generation of Rheostatik series using mild steel boy is batch 1984, It's same design like second and third generation (Numbered KL3 84102F to KL3 84116F) .
This is fourth generation of Rheostatik series, the picture showed a fourth
generation of Rheostatik series, KL3 84102F
The next generation is batch 1986 and 1987 which are differently from 1976 - 1984 generation. This generation using stainless steel body and have 3 doors (Numbered KL3 86102F to KL3 86120F, for batch 1987 it's numbered KL3 87102F to KL3 87120F).
This is fifth generation of Rheostatik series, the picture showed a fifth
generation of Rheostatik series, K3 1 86 11F (New number)
This is sixth generation of Rheostatik series, the picture showed a sixth
generation of Rheostatik series, KL3 87108F
This topic will be continued in next day about history of this series.