American. 1940s. TWO (2) machines and two carrying cases (13.25� x 8.25� x 11.5�H) manufactured by the Singer Sewing Machine Manufacturing Co. between 1933 and 1968. The Model 221 is constructed of aluminum and weighs approximately 11 pounds. It is a lockstitch machine that sews forward and reverse. Although the Model 221 is not rare, it is highly sought after by both collectors and quilters. The serial number AG603275 (1941-47) is condition 7. The serial number AG819898 (1941-47) is condition 8. Est. $400-600. Carl Koenig Collection. CODE-SEW