Seems to be genuine...
In early 1955, GE introduced their first FilterFlo washer the WA750M. There were two other models available in the line, both lacking the filterflo. The MOL washer (ebay) had an overflow rinse the BOL model was a bizarre, semi-automatic incarnation. It's very possible that this washer was purchased sometime in 1955 before all models had the filterflo feature and when color was newly intro'd to the line. Someone email the seller and get the model number, then we'll know for sure.
If you look closely at the picture, the lid is just a bit too shiny and perfect to have been painted - and we know how thick GE porcelain was...very durable.