https://www.shopgoodwill.com/Item/92995238 The serial is
AD14599, and on ISMACS it shows that as a 30, from Feb 1930. But it has a potted motor, and did they really ever make industrial machines with potted motors?
I just started learning how to identify Singer models "from crappy Craigslist photos" and I've hit a brick wall on this one. Here's the blog with the ID lessons:
http://vssmb.blogspot.com/2011/07/vi...g-singers.html