Originally Posted by jljack

The serial number is stamped in the frame of the machine on the bottom under the bobbin end. Most of the 301s were made in early 1950s. Mine is a 1951 also. Love that cabinet...the cabinets are not that easy to find. You can easily take the machine out of the cabinet to use as a table top...there is a latch on the bottom to release it. They have a plate on the bottom and feet (that can be replaced if yours are hard and cracked) so it can be portable. Mine didn't have a cabinet or a case when I got it.