As someone that knew David Silverman personally (not well but I have talked to him several times and have also sold machines to him years ago) and someone that also knows a good bit about the auction process (I have worked with auctioneers - had auctions myself - and attended hundreds of them here in central PA). Let me explain what I can for all who are curious.
As far as David Silverman - he was not only a collector but also a hoarder (in a way) and loved everything pinball. He had a vision of sharing part of his collection with the general public and started the National Pinball Museum trying to do that. The NPM only housed a small part of his collection and he did a beautiful job with it in Washington but he got himself into a bind because he got into a location with cheap rent but no long term lease. After he was asked to leave that location he did the same thing two or three more times having to move hundreds of machines each time. I guess after 4 or 5 years of that he had enough and collection went up for sale.
As far as the auctions go - auctioneers set auctions up to try to get best return for their customers but also trying to make things as easy as they can for themselves. So they broke the collection down into several auctions selling the best stuff first trying to get the best return early on. Now they have all the "junk" to get rid of.
What should have been done, in my eyes, was to have put 40 or 50 of these machines in each of the other auctions and held back some of the better machines for this auction. I think this is going to be a disaster - there is really nothing to draw a decent crowd, the local market is already flooded with machines from earlier auctions, they are trying to sell off about 400 fairly unpopular woodrails at once, etc.
Don't get me wrong - I like woodrails but there just isn't a market in the pinball world for that many of them all at once let alone after already selling a bunch of them in this area this past year.
Anyway - best of luck to David and Morphy's with this sale but I doubt it is going to end well for either of them. Hopefully David did well enough with previous auctions to clear up his debt from his attempts to share his collection with others. I wish things would have worked out better for him but sometimes things just are not in the cards. I do thank him for trying and wish him well!