After doing two loads in Robert's 56 this past weekend and today's POD showing a 55, I found an old photo of me which I had posted a couple of years ago, approx age 3 or 4 standing beside my Mom's 55 - just like the one on today's POD. It's thread #143292. The wash & rinse temp buttons were on the left side on thwe 55 model and then moved over to the right next to the wonder dial on the 56. Other than that the machines were identical.