You can EITHER use it as it is OR refurbish it using the instructions I've attached. It does have cracks in the steering bar that need filling and is unlikely to be easy to remove from the column shaft.
1058 handlebar for refurbishing
1066 bottom steering column bearing
1067 steering column chrome tube
1068 steering column support bracket
1051a steering column nut
X112 steering column triangle bottom plate
X113 top hat for steering plate
Repairing the cracks
Epoxy car body filler has proven to be an effective repair material using the following procedure:
1. Grind or drill out the area around the crack to expose the steel bar inside the coating material.
2. Clean the area to give a good key to the filler and especially onto the steel bar.
3. Apply filler to restore the shape.
4. When cured, sand it back to the original shape.
If you are not sure about any of this, take the bar to a car body shop where they have technicians experienced in this kind of filling and finishing.
Painting the repaired steering bar.
Steering bars came in two colours, in line with the type of interior.
1. Early style "sunburst" side panel with wood strips (55-58period) used a pale ivory colour (nearly white)- Rover 449 is an equivalent shade.
2. Most Messerschmitts will be the later finish with Mercedes 181 light beige (hellbeige) being the nearest shade. RAL 1015 Light Ivory is also a close match.