Once you sell or give away a machine, you have to let it go and not worry about what the new owner does with it. I had a WWII refurbished 66 at one time and believe me it was way uglier than yours is. I'm in the minority in that I don't care for 66s at all, I too kept the cabinet, gave the machine away and my only thought was good riddance. If you're only trying to make money because you've spent money on the machines, in this hobby it seldom happens that way. Only the rare, or special machines, or ones that have had a lot of work done(which you apparently aren't willing to do) to be brought back to life will make you any money, and even then not always. Most vintage machine collectors' lives go something like this:
You pay $25 for a dirty old machine, spend $30 on parts and 10-30 hours getting it all nice and pretty and working properly in order to sell it for $40. Such is our life.
Cari