I hopped a plane to San Diego last week, and from the security area there is a long hall with people-movers down to the vast departure area that belongs to United. Along this hall United usually has exhibits such as dishes, hand-painted tiles, or typewriters. I'm always early enough to be able to walk through and look at the displays, and it is always a treat. Last week it was slot machines. Unfortunately they are in the plastic display cases United uses, so I could not run my hand along the steel cases, but I had seen all but two pass through the Victorian Casino Antiques Auctions we attend. Go here to check out a few of the machines shown at the exhibit: http://www.flysfo.com/web/page/about/news/pressres/exh-slots.html
I wish I had floor space for one of the triples. I have a Little Duke, unfortunately, the side vendor didn't make it to my dining room.