Thanks Judy for the info on your ink well. And Caroline, thanks for the info and photos! Interesting that you both have #14 ink wells and I have a #4. Maybe the numbers have to do with when (or even where) they were made? And maybe I should go check my number again! ..... Right, I did just that and it does have the #4 with a line across the top of the number. So maybe all the bakelite tops fit all the glass bottoms and maybe not. My cabinet came with a Singer 15-91 and drawers full of attachments. In fact, it was the cabinet and attachments that first drew me to the machine. My dh ended up buying it for me as a gift because, as many have said, I did not have room for it so left it behind.
Thanks again to you both for the response.