My dad's aunt & uncle's house, which was built in 1936, had double concrete laundry tubs in the basement. I remember there were galvanized metal washboard inserts on the front (sloped) sections. I've also seen them on other freestanding laundry sinks. What is different about these is that they are a drop-in sink that goes into a countertop, which would look good in an extra nice laundry room, such as one that has cabinets that match those in the kitchen.