I am like you got to know about them recently. They are old singer machines and I think (someone correct me pls) they come in 221 model and 222 model and go back to the 1930s or 1940s. They are so darn cute. I bought two in one month but then sent out one to get it refurbished to like new (new paint and all) and it is a beauty. I have the other one which is in a perfect working condition if you are interested pm me as I only need one as decoration in my sewing room
Sorry have no idea how to fix the pic