A splendid set of machines; a couple there that I would like!
A collection such as this could likely only go to a well-off new collector, since, as Uwe points out, any established collector would already have many of these and may not want the bother of selling on the doubles. I chime in with the obvious 'List them separately on eBay or another major site'. The only sure way to turn ready cash, I should think.
Can anyone leave the message for her - or guide her to this page?