And now I get it. There's a post a day or two before with this text:
Wanted Rock and Roll type pinball machines for a local Rock Bar. Guns and Roses, KISS, Nugent, Tommy (the Who) Elvis, or any other Rock and Roll pinball machines. Elton Johns Captian Fantastic is not a rock machine. Machines must be coin operated and in above average condition. Will pay top $ for exceptional examples or machines with a special history. There must be some documentation if you are claiming special history. No Junk! Email machine type and asking price.