M.B.S. series 500 Self-unloaders 2-axle

In the M.B.S. 500 series are the self-unloaders, all fictitious.
This series of single wagons currently only consists of self-unloader 501, but will be expanded to three in the future.

M.B.S. 501

The M.B.S. 501 self-unloader is the first of a series of three 501-503 part of the self-unloader series 500.
On October 4, 2023, the M.B.S. 501 originated from the old O.E.G. 4141 and painted rust brown.