My name is ***** ***** I'm happy to help.
Based on the serial number, your machine was built on December 6, 1921 and its Model Number is *****
This machine was made at a time when every home had one, so it is definitely not rare. Most of the ones sold are purchased just for the cabinet. If you sew, you should keep it, or use the cabinet as a plant stand or for entertainment equipment, which is what most purchasers do with them. If you sold it you wouldn't get much for it - perhaps $75 to $100, if it is in excellent cosmetic and working condition.
I hope this answer has been helpful to you.
If you have any further questions or problems concerning your answer, please let me know.
If you would like to work with me on further questions you might have, it would be a pleasure to work with you again. All you have to do is put my name (Judith) at the beginning of your question.
I need your positive rating! Could you very kindly rate my services (with the stars or "accept" button) as this is how I get paid by JustAnswer, at no extra cost to you. We can still continue to communicate here on this thread after you do.
Thank you so much!