I have an old belvedere that looks almost identical to Greta. And I can't seem to find any information on it. I'm guessing its from the 1920's but I don't have a manual, it still runs but I think it needs oil. I don't know what type, I don't know what kind of bobbins it needs or even how to thread the machine. I was wondering if you could help me out with that sort of information. I don't know much about sewing machines.