BMW pre-war gearbox, stamped 615 15 600 / 15286, believed for BMW 315,319,320,321

BMW 315,319,320,321 Gearbox. Please check pictures carefully, there are visible some defects. In the pictures I have listed all visible defects that I know. Any other possible defects are unknown to me. I have also photos from the inside of gearbox - the gears looks fine, without any rust or visible defects. The main shaft can be turned by hand easily.
Obviously repair and restoration is needed.
I do not have any other parts from this vehicle.

Price negotiable. Worldwide shipping is possible through global shipping companies like DHL, DPD, etc. Shipping costs are covered by buyer.

Numbers on the part:
615 15 600
15286