The family of Super Elto’s are great motors and fun to run.
Technically not an RBM though.
Usually the coil wires are falling apart but yours seem to
look as though someone has dealt with that issue already.
Your motor looks to be a nice example in the pictures.
Flywheels not rusty, (wrong nut though), tank looks very
nice as does the rest of the motor. These are pretty common
so it shouldn’t be to difficult to get any parts you need.
Several individuals on the board are familiar
with these so just ask if you have questions.
Here are some links you might find useful.
https://www.youtube.com/watch?v=e2vxDqF_OEU
https://www.youtube.com/watch?v=zLS6IglCy9k
https://www.youtube.com/watch?v=pFelCQwciSk