Need advice on selling unique high end system

So I wanted to bring something to the group’s attention in hopes that some who are more knowledgeable about this can share some advice. You might have seen this story on the internet about a guy named Ken Fritz who built a completely amazing sound system in his house here in Richmond Virginia.

Ken Fritz - the best stereo system in the world

Well he acquired ALS a few years ago and passed away last year. I am friends with his daughter and I’m going to try to help her sell the system. But we could use the groups advice on how to reach the right people ($$$) who would be interested in purchasing such a system. I mean for someone who has a lot of disposable income this is a once in a lifetime opportunity. I’m meeting up with her tomorrow to finally get to listen to it myself and get a sense of what she has been told it’s worth. Each speaker is like 1500 lb so you need like a piano mover company to move them.