I have a Singer model 301 made in simanco with 170127 after simanco. It is the only number i can find on the sewing machine other than the model number. I am curious to how old it is and what it is worth. It is part of a small sewing table where the machine folds under the table top to store away. Im sorry i do not know a lot about these machines and i could not find a serial number any where. Any help would be appreciated.