You could nail a shelf to the wall and put it on that.

How about a mannequin? It could be playing it. If you have a room that needs a focal point.

In a glass case? I’m guessing you’d prefer to keep it open to show it off, but then it would get terribly dusty.

I think it might be cool to expand it across a console table (maybe a cabinet or table from the same era).

I’d get a couple of these wall-mounted hands and have the accordion arched between them.

^Oh, I love that idea!!

Thanks for your suggestions!

Might be fun to prop it up against the pillow on the bed in the guest room with a shawl around it.