My daughter called and said that she found an unusual looking treadle sewing machine. She said that it was black and had a funny hook up for the belt. She gave me the serial number which is EF 546519. I looked it up and it said that it was a 221 k. Made Aug,17,1949. If I looked at the numbers correctly. If I remember rightly 221k is a Feather weight. Did they come as a treadle? The thrift store wants $80 for it with cabinet. Kathie