Thank you for submitting your item for appraisal. This appears to be a Singer model 66 sewing machine from 1948 with foot pedal and lamp. The black crinkle lacquer finish is rather rare and an enthusiats might be willing to pay more than the estimate given for a sewing machine in working order. The estimate is based on recent auction results for similars. There is no measurement for the sentimental value you might attach to it.