Bought my first Domestic treadle today, I think it's called a fiddle back or bottom. All the parts are there, coffin top, and has a lot of accessories. Very little rust, cabinet has a lot of grime on it, but no veneer peal and no water stains. The machine has a layer of grime that I hope is hiding some nice decals, I can barely see them under the grime. Where can I get an idea of the age? The serial # I forgot to right down. It may be delivered this afternoon or I will have to pick it up next week.