How heavy is it? Are you hoping to minimize whatever you use or do you want hanging hardware to also make a statement as well? Propeller is gorgeous!

Get two big hooks like the ones used for garden tools. Attach them into studs. Put the prop on top.

Look for a local art hanger. Most galleries can refer you to one or Google it. Some designers do this too. A professional hanger will have the best solution. I always use a professional to hang special pieces or collector value art. The service is not particularly expensive and so worth it. Saves on holes in the wall too!