Original WWII German replacement 8cm Gr.W.34 mortar parts. Many parts are still partially coated in a red sealant to provide corrosion protection. The coating is original German also.
This is the gear that the elevation knob is directly mounted to and it goes inside the yolk to drive the elevation screw up and down.
Parts are in great condition. Markings may vary; some parts have no markings. Only 1 available - no hope of ever finding more.