I remember my Aunt and Grandmother having the same portable dishwasher, and I have not seen one like it again. It was avacado green with a wood top. It was a top loader, and instead of having removable racks, the top rack was divided and attached to the lid, so it swung as you raised or lowered the lid.
I remember it had a row of buttons on the top and the last button released the lid. Does anyone know what kind it was?